Chapter 3 and Chapter 5 of this standard are mandatory. The rest are mandatory. This standard was submitted by China Petroleum and Chemical Industry Association and is the National Technical Committee for Agricultural Standardization (SAC/TC133). GB19308—2003
This standard was drafted by: Biyang Chemical Research Institute, and drafted by: Xianzhengbi Nantong Crop Protection Co., Ltd., Chaobei Lengjiangdatian Agrochemical Co., Ltd. and Ren Gongchuan. The main drafters of the standard are: Xu Laiwei, Zhang Kuibing, Jia Runmin, Liu Zhengpai, Chen Xinsheng, Lian Heli. Paraquat aqueous solution
Other names, structural formulas and basic physical and chemical properties of paraquat, the active ingredient in this product, are as follows: IS name,
CIPA core code: 56
Chemical name, 1,1-dipyridyl-1,1-bipyrrolidone ion formula:
Empirical formula: tH.N
Relative molecular mass: 16.3 according to 199? International standard for atomic force microscope) Biological certificate European section
Decomposition temperature: about 300 °C (paraquat dichloride) atmospheric pressure (paraquat dichloride, 2uIt) ≤5,) maCFis
GB19308-2003
Dissociation degree (paraquat chloride, 20It/L) in water 795. It falls into low-grade degradation categories and does not contain hydrocarbons. <Paraquat dichloride) is stable in acidic medium and rapidly hydrolyzed in alkaline medium! Its water content degrades under ultraviolet light. The name, structural formula and physicochemical parameters of the emetic triazine in this product are as follows: Chemical name: 7-amino-6-(6-nitropropane-4-(1.2.4)-1-hydrogen-1-pyridine (5) sodium formula: GH.NC Relative molecular weight: 217.2 (calculated according to the 1997 International Phase Identification System) Biological activity: asthenic agent Melting point (t): 164-65 Mobility qualitative parameters Hydrolysis in water 1 Scope This standard specifies the requirements, test methods, labeling, identification, and maintenance of emetics. This standard is applicable to paraquat and impurities produced during production, as well as paraquat composed of emetics, astringents and colorants. 2 Normative references
The latest versions of the following documents shall be the provisions of this standard through reference in this standard: For any document with a date of month, all subsequent amendments (without the content of the amendment) or revisions shall not be retroactively applied to this standard. However, the parties who have reached an agreement on this standard are encouraged to study whether the latest versions of these documents can be used. For any outdated referenced documents, their updated versions shall be used in this standard. GB/T:601 Method for determination of pH value of pesticides
GB19308--2003
G/116—2001 Qualitative determination method for pesticides GB/TSU-1505—2001 Specification for inspection of commercial pesticides
GB3796 Pesticide sampling method Packaging General Plan
GB/T7 Chemical Products 5, relative investment requirements
3.1 Sense and appearance
This product should be made of standard fine powder, which should be a blue to green liquid with special smell. 3.2 Technical indicators
The product should meet the requirements of the standard.
Table 1 Control Items of Fine Powder
Quality Index of Fine Powder Number/%
or mass concentration 12℃/(g/100mL
Baicao station Yang Zhouzi and three silver eye quality ratio. 4.4*-Batch quality analysis:%
Water non-free blood fraction/%
Distance to particle quality
Low source
Sense storage quality"
When a dispute occurs, the reform plate analysis shall be used as the exemption number, 25% aqueous solution
25. 0±1:3
20% water bottle
www.bzxz.net18, 5+11
:4C±5)
Bai single cell quality analysis D.3%
4. 5--7. 0
It is allowed to use the relevant requirements of G5/T16352001 and the relevant detection methods and relevant standards of FA05prelifiviuiin56/N1./N/(1Na4) in the whole pesticide standardization technology, the percentage of positive is higher than that of triazole, 4,4\-bipyrrolidone, and the "qualitative and potential qualitative analysis" should be carried out at least once every 3 months.
4 swabbing method
4.1 Sampling
According to the sampling method of G5/T16352001\milk and filter state": the random number table method is used to determine the packaging quality of the reduced fence 1 final oil tray is less than 200ml.,
1.2, monitoring test
high reduction microspectroscopy method can be used to determine whether the test is still carried out. Under the specified chromatographic conditions, the absorption wavelength of the sample sieve solution and the maximum absorption wavelength of the standard sample should be consistent, both are 6u r. 4.3 Determination of the content of chlorpyrifos
4.3.1 Phase chromatography (punching method)
4.3.1.1 Summary of the method
GB193082003
The sample is dissolved in distilled water. Sodium sulfonaldehyde·ethyl-1-succinol solution is used as the mobile phase. In a chromatograph and an external variable emission detector with Cucell Pek C1s MG.5r as the filler, the total viscosity in the test sample is separated and determined by phase chromatography. 4.3.1.2 Reagents and solvents: Sodium pyrophosphate: chromatographically pure: sodium pyrophosphate; triethylamine; freshly distilled water; 100% ethanol standard sample (dried at 1% or above before use: distilled water to a concentration of 1:1. Mobile phase: weigh 3.4 g of sodium sulfoxide and add 16 mL of triethylamine to 1% ethanol. Adjust the pH to 2 with triethylamine and add 100 μg of brain. After mixing, filter through a 0.5 μm filter and ultrasonicate for 10 min. 4. 3. 1. 3 Instruments
Chain village color analyzer: it has external variable length check scale and fixed Kun sample network: color number processor or color potential work! Color harmony society: 4.mmid×50mm stainless steel parts, filled with CapcellPakc5Mc.5m filling point with the same effect of other branches color analyzer;
In full: natural hole diameter about 0.m
trace compensation coupons, 50
4.3.1.4 Liquid chromatography operating conditions||tt| |Flow rate: 1.5u/mir:
Temperature: Room temperature (channel difference should not change much >2C:)Detection wavelength: 290nm
Selection volume, Iug1.3
Retention time: about 5.2yri11. The above-mentioned phase color cultivation operating conditions are typical operating seasons. According to the characteristics of the instrument, the detection parameters of the instrument can be appropriately adjusted to obtain the best effect. The phase color increase of the complete white water antagonist is measured with 1:4.3.1.5 step
4.3. 1.6、Preparation of standard solution
Prepare a standard solution of C.5 soluble in water to CGC=g, dissolve it in 1.5L volumetric volume, and make up to volume. Take up 5ml with a pipette, and put it into a 1.5L container or bottle. Add water and make up to volume. Correct the solution: 4.3.1.5.2 Preparation of sample solution
Take a sample containing 1% carbuncle and make up to 1.5L volumetric volume or bottle. Add water and make up to volume. Take up 5ml with a pipette. al consultation dosage, water volume, market use, 4 filter desert involved, 4.3.1.5.3 determination
in the case of the speed of work, the drug collection device agreed, the number of people in the seat dyeing needle cup liquid, straight pregnancy adjacent to the two pairs of dry drop area village change small: 1. after the door, according to the standard liquid, sample liquid, sample liquid. Standard drop wave order! Injection machine. GB19308-2003
hundred files,
4.3. 1. 6
Figure 1 Chromatogram of Paraquat Aqueous Solution
The first two needles of the sample and the second two needles of the sample are measured and the mass fraction of Paraquat in the sample (% is calculated by direct formula, the viscosity of Paraquat/00m) is (2-A Yi P ×
) (1) and (3):
A x mt:
A,XMXP
The half-moment value of the selected area in the standard sample is A.-
The average value of the peak in the test liquid is: JE1
The mass fraction of Paraquat in the sample is in grams(M.-257.2). The concentration of the sample at -20°C is g/ml (g/ml. Determine according to GB/T4472) ()
4.3.1.7 Allowable error
GB133082003
The difference between the results of two parallel determinations shall not be greater than 1.0% or 1g/100mL. Collect the arithmetic half mean as the standard result. 4.3.2 Colorimetric method
4.3.2.1 Method requirements
Trichloroethane is converted into a blue ion in the presence of hydrochloric acid. This ion can be measured with a permanent blue glass plate: its photometric value is obtained at 6m, and the trichloroethane standard sample is used to draw a standard curve of trichloroethane, thereby calculating the mass fraction of trichloroethane in the sample.
4.3.2.2 Reagent solution
Sodium hydroxide:
.1e1/sodium hydroxide;
mass fraction 1 sodium hydroxide solution, pressure 1m0.1, sodium hydroxide solution with a mass fraction of 1 must be prepared. Prepare it now and keep it for no more than 3 months: Paraquat standard sample 1 must be dried at 10:41°C for 1 month before use: 8.0% paraquat standard sample filtration: weigh 6.7g of paraquat standard sample (accurate to 0.932 g was dissolved in water in a 593 L container and made up to volume. The sample was stored in a dark place for 3 months. 4.3.2.3 Instruments: Spectrophotometer: equipped with a 1 cm colorimetric cell, double blue filter or water-based material that can produce an absorbance of about 1.5 at nm, such as glass or gold! The particle holder of the absorption cell should be the same as the surface of the reference cell. 4.3.2.4 Determination steps: 4.3.2.4.1 Drawing of calibration curve: Take 9.00 mL, 10.00 mL, 11.00 mL, 12.00 m, 13.00 mL, and 100 mL of the reference cell. Collect all the 8 CL volume in a 8 ml bottle with water, add 1 cm 1.1% aldehyde solution and release it with water. Put the sample into the glass block and pour the sample up and down three times (do not stir immediately to avoid oxidation and elimination) until the bubble is visible at the top end. Transfer the sample immediately into a colorimetric cell and measure the absorbance at 1 with a permanent reference filter as reference. The other volumes of the drop can be treated in the same way, but only after the absorption of one drop has been recovered can the next small reduction be carried out: using the absorbance as the coordinate and the viscosity (unit) as the reference mark to make the effective line 4.3.2.4.2 Determination of the sample
Weigh the sample containing 1.2% viscosity to make sure it reaches U .)2! . In a 500l bottle, dissolve with water, shake and collect about 1u.UrL accurately: put it into a 1u.UrL volumetric bottle and dilute with water to 8nm. Add 1ml. 1% sodium sulfide reducing solvent and dilute to the scale with water. Plug the glass tube tightly and move each volumetric bottle up and down at a speed of bubbles from the 1 end to the 2 end (do not shake vigorously to avoid color loss due to oxidation). Immediately put this wave into a 1m color filter. Compare with the permanent reference filter and measure the absorbance of the solution at 600nm. According to the absorbance of the test solution, the mass of the sample solution can be obtained from the calibration curve. 4.3.2.5 Calculation of
Formula Detailed: The concentration of chloramphenicol in the formula (3) is calculated as c/100 ml.) According to the formula (1>, the original is: 700
pa42xx 10 x4
(3) (4:
.--The mass of the sample solution obtained from the calibration, the unit is gram per liter (g/mL): Special--The mass of the sample in grams (g
CE 19308-2003
area 2) The density of the evaluation is grams per drop.g/mT.3 According to GH/T4472 for determination》2.3.2.6 The allowable difference
of the parallel determination results shall not be greater than 1.0 times or 1/10m, and the value shall be taken as the demarcation result. 4.4 The determination of pH value
is carried out according to GB/71601.
4. 5 Determination of the mass ratio of paraquat and triazopyrimidone 4.5. Method The following method was used: methanol·methanol was used as the mobile phase, CuAlPkCMG and Sm were used as the fillers, and a UV-variable wavelength detector was used to separate and determine the mass ratio of paraquat and triazopyrimidone by subtractive chromatography. The mass ratio of paraquat and triazopyrimidone was calculated. 4.5.2 Test phase and centrifugal liquid: alcohol: water: freshly distilled water and double distilled water. The mass fraction of triazopyrimidone was known. 4.5.3 Instrument required: liquid chromatography: with UV-variable wavelength detector and quantitative injection: chromatograph with sugar treatment milk or Color Novi station
chromatography: 4.emm) × 2mm stainless steel parts, internal integration Crell1akC18MG, um filling period <or H with the same effect of other reverse phase>;
transmitter: membrane pore size potential.m
system reverse sampler: 50.
4.5.4 Filter phase chromatography operation required parts
flow or: 0 (CH.(HHC) = 55:45;
dynamic phase flow: 1./in
strong group: case all (temperature desert does not change much 2℃)) measurement wavelength: 320
violation sample duty, U.
shape preservation time: wind theory sense 4,5rinl
on The above-mentioned phase-free detection conditions are typical operating parameters. According to the characteristics of different instruments, the operating parameters can be appropriately adjusted to obtain the best results. The liquid chromatogram of the prepared triazole solution in water is shown in Figure 2. 4.5.5 Determination steps
A.5.5.1 Preparation of standard solution
Weigh the standard triazole solution to 3.2 ml and place it in a volumetric flask. Add methanol to a volumetric flask and make it to volume. Transfer 1 ml of the solution to a volumetric flask with water at an appropriate rate. Shake the mixture. 4.5.5.2 Preparation of sample solution
Weigh 2 ml of the sample solution (accurate to ?) to a volumetric flask. Add water to a volumetric flask and shake the mixture. Use the flow rate as shown in the figure.
4.5.5.3 Determination | |tt||Under the above chromatographic working conditions, after the instrument is stabilized, the standard liquid is continuously injected, and the area of oxazolidinone in the two needles is changed by less than 3%. Then, the standard solution, test column concentration, sample liquid, and standard solution are injected and analyzed in sequence. E
Sanjing taste insurance network
4.5.6 Calculation
Liquid chromatogram of triazine in paraquat aqueous solution G19308-2003
The peaks of about two needles of sample braid and the peaks of the standard sample before and after the sample are collected are averaged, and the mass fraction (%) of the test sample is calculated by formula (5): A, Xxy
Xm; <100
A-the average value of the peak of azole in the standard sample solution; A-the half-mean value of the peak of azole in the sample solution; m-the weight of the standard sample, in grams (in grams): m
the amount of the sample, in grams (in grams),
the purity of the azole standard sample required, %.
the mass ratio of the azole to nitrogen in the test column is calculated according to formula (6): ry
The mass fraction of the sticky substance in the mixture is %, %:
The decomposition efficiency of the substance in the mixture is: 4.64.4 Determination of premature separation of the substance
4.6.1 Summary of the method
The sample is dissolved in water, ethyl acetate-water is used as the mobile phase, and the sample is chromatographically analyzed on a column filled with CapcrlPak C18Gs and a variable wavelength detector. 4.6.2 Reagents and solution: freshly distilled water, freshly distilled water 4.4-Bipyridine calibration sample: known amount 99.0% 4.6.3 Light scanning chromatograph: with ultraviolet variable wavelength detection and calibration valve, chromatograph data processor or chromatograph workstation; chromatographic column 4.5mmd) × 25m impermeable Note: u1Pk1MG.5rr block filled (with the same effect as the reverse phase column
thinner: membrane pore size about 0.15m:
micro-inlet curtain: 50ul.,
4.6.4 Phase chromatography working conditions
mobile phase CHCN·TIO) 15:85
mobile phase flow rate: 1,0ml/ain
Temperature: filling temperature (difference should not be greater than 2)
Test length: 240nm
Injection volume: 10uT
Guaranteed, 1,4-bipyridine 5.9mim. The above liquid chromatography operating conditions are typical data parameters. According to the characteristics of different instruments, the given operating parameters can be appropriately adjusted to obtain the best effect. The liquid chromatogram of the standard sample of 4,4-bipyridine has a range of 3.1-4.4*-bipyridine.
: 34,4-Bipyridine standard sample titration 4.6.5 Determination steps
4.6.5.1 Preparation of standard sample solution
GH19308—2003
Weigh 0.1g of 1,4-bipyridine standard solution (accurate to 0.0002g), put it in a 150mL volumetric flask, add ethanol to dissolve and fix, then use a filter to absorb about 1mL, put it in a 50L volumetric flask, add water to fix, shake. 4.6.5.2 Preparation of reversed sample solution
Weigh 2.5g of sample (accurate to 0.0c92g), put it in a 0ml. volumetric flask, add ethanol to dissolve and fix, then pass through a 0.45ur membrane.
4,6.5.3 Determination
Under the above selected chromatographic operating conditions, after the instrument is stable, continue to drip the standard sample until the relative change of the adjacent instantaneous 4,4-bipyridine area is less than 3.0%. Then control the dripping of the standard sample, the test solution, the sample solution, and the standard solution are sampled and analyzed in sequence. 4.6.6 Calculation
Average the peak values of 4,4-bipyridine in the two sample solutions and the two standard sample solutions after the sample is dissolved, and the mass distribution efficiency of 4:-bipyridine in the sample (%) is calculated as follows:,
A, xXp
A, ×m: ×100
The average value of the peak area of 4,4-bipyridine in the standard sample; the average value of the peak area of 4,4-bipyridine in the sample; m. The mass unit of the standard sample is gram (g); rt:
The mass of the sample, in gram ():
. The purity of the bipyridine standard sample, %.
4.7 Determination of water-insoluble substances
4.7, 1 Reagents and positioners
Glass core state: G3
Oven: 13 5℃+2℃
Suction filter bottle: 500mL
4.7.2 Determination method
Weigh 21g of test rod (accurate to 0.01) and add 153m2 of dihydrate to 253m2 of flask, stir for 2a1, use a block that has been heated in an oven to extract the energy until the temperature reaches 0.C32>, then use ml of water to wash the beaker twice, and filter by suction, dry the flask for 10 hours. Take it out and cool it in a condenser, and weigh it (accurate to 1.000) 2) Insoluble matter in the sample Fraction w (cured). Calculated according to formula (81): code # × 100
In:
The total mass of the dried block and the water body, in grams (g); the constant temperature after the tower, in grams ().
The test yield, in grams ().
4.8 Release stability test
4.8.1 Reagents and instruments
Standard hard water: pM**1C%*1)-42mg/L., connected (B/T160320c1 Medium-range preparation: 1Gmml.,
Constant temperature water bath; 30t1;
Pipette: 5L..
GR19308—2003
4.9.2 Test steps
Pipette 5L into a 3mL tube, add standard water to 0.5mL, mix. Place the sample in a constant temperature water bath at 1°C and let stand for 11 minutes. The average light precipitate is 4.9. Low temperature stability test
4. 9. 1 Night apparatus
Refrigerator, keep the temperature at 1.
4.9.2 Test step
Take 100m.1.0 test solution, collect 200mL of the solution, cool it to 1:1 in the refrigerator and store it for 12h, take it out and swallow it. If the solid matter precipitates out, it will be a solid. 4.10 Thermal hazard qualitative test
4.10.1 Receiver
Hot box (or warm water): :
Install or seal the glass? :
Medical injection warning: 50nL,
4.10.2 Test steps
Use the blue radiation to place the test sample in the cooling water (avoid direct blood drawing) in the cooling water (avoid volatilization of the potential agent), seal at least 3 bottles, weigh them separately: put the uniformly good samples in a ventilator, and then put them in another container (or wet water bath), place them! 44, take them out to the actual temperature, and place them separately. Take the test rods that have changed in quality, and measure the mass fraction of paraquat in Ding 211. The mass fraction of paraquat should not be lower than the previous %; the pH value and dilution stability should still meet the requirements of 3.2. 4.11 Inspection and acceptance of products
shall comply with the provisions of GH/T1614. Process according to the limit effect value and use the sodium value comparison method. 5.1 The marking, labeling and packaging of Paraquat Aqueous Solution shall comply with the provisions of CB375. 5.2 Paraquat Aqueous Solution shall be packaged in compact bottles or polyethylene bottles, with the net content of each bottle being 50ml, 200ml, 25ml or 1L. The outer packaging shall be in cartons, cardboard boxes or plastic boxes, with the net content of each box not exceeding 15kg. Plastic boxes may also be used for packaging, with the net content of each box being 20kg. Other forms of packaging may also be used according to user requirements or ordering agreements, but they must comply with the provisions of CB375. 5.3 Paraquat Aqueous Solution packages shall be stored in a ventilated and dry warehouse. 5.4 During transportation, they shall be strictly protected from moisture and sunlight, and shall not be Mix with food, seeds, and materials to avoid contact with skin and eyes, and prevent inhalation through the mouth. 5.5 Safety: This product is moderately toxic and irritating to eyes. It may cause temporary damage. Wear goggles and leather gloves when using this product. If it accidentally gets into eyes, open the cover and rinse with clean water for 1 minute, then ask a doctor for treatment. If this product gets on the skin, rinse with water immediately. If the person is injured, induce vomiting immediately and send to hospital for emergency treatment in time. Use only 1L of 15% kaolin or 7% molten clay or activated carbon suspension, and take appropriate laxatives such as glycerol or carbon at the same time. 5. Product acceptance period Under the specified storage and transportation conditions, the warranty period of the water-repellent is 3 years from the date of production.Take out and cool in a decanter, weigh (accurate to 1.000) 2) the fraction of insoluble matter in the sample w (wt). Calculate according to formula (81): m # × 100
Where:
the total mass of the dried block and the water-soluble matter, in grams (g); the constant temperature after drying, in grams (wt%)
the yield of the test substance, in grams (wt%).
4.8 Release stability test
4.8.1 Reagents and instruments
Standard hard water: pM**1C%*1) -42mg /L., connect (B/T160320c1 medium-range should reach the preparation method: and wear, 1Gmml.,
constant temperature water bath; 30t1;
pipette: 5L..
GR19308—2003
4.9.2 test steps
use the wave tube to absorb 5 workers or columns, in _3mL and the standard water is released to the seat, mix. This amount of wave people 1℃ constant temperature water. Stand for 11. The light precipitate is 4.9 low temperature stability test
4. 9. 1 night apparatus
refrigerator, keep the temperature at 1.
4.9.2 test step
take 100m.1.0 test liquid, collect 200mL of calcined liquid, cool to 1:1 in refrigerator, store for 12h, take out and swallow, especially solid matter will be precipitated as solid matter, 4.10 thermal run qualitative test
4.10.1 receiver
conservative box (or warm water): :
safe or 54 pieces of sealed glass? :
medical injection warning: 50nL,
4.10.2 test step weak
Put the test sample in a coolant-free environment (avoid direct blood drawing) and place it in a cooling container (avoid volatilization of the potential agent). Seal at least 3 bottles and weigh them separately: put the evenly distributed samples in a ventilator, and then put them in another container (or a wet water bath) to keep them cool. Take out the samples and place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Take the samples and place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). 4.11 Inspection and acceptance of products
shall comply with the provisions of GH/T1614. Process according to the limit effect value and use the sodium value comparison method. 5 Marking, labeling, packaging and storage and transportation
5.1 The marking, labeling and packaging of Paraquat Aqueous Solution shall comply with the provisions of GH375. 5.2 Paraquat Aqueous Solution shall be packaged in tight bottles or polyethylene bottles, with a net content of 50ml, 200ml, 25ml or 1L per bottle, and the outer packaging shall be cartons, cardboard boxes or plastic boxes, with a net content of no more than 15kg per box. Plastic cabinets may also be used for packaging, with a net content of no more than 1kg per box. Contains 20%. Other forms of packaging can also be used according to user requirements or order agreements. However, they must comply with the current regulations of CB37%. 5.3 Paraquat aqueous solution packages should be stored in ventilated and dry warehouses. 5.4 During transportation, strictly prevent moisture and sunlight, and do not mix with food seeds and feed. Avoid contact with skin and eyes, and prevent inhalation through the mouth. 5.5 Safety: This product is moderately toxic and irritating to the eyes. It can cause eye damage. Wear goggles and leather gloves when using this product. If it accidentally gets into the eyes, open the cover, rinse with clean water, and then ask a doctor for treatment. If this product gets on the skin, rinse it immediately with water. If it is accidentally touched, induce vomiting immediately and send it to the hospital for treatment in time. Limited to 1L of 15% kaolin or 7% molybdenum clay or activated carbon suspension, and take appropriate laxatives such as glycerol or carbon at the same time. Product acceptance period: Under the prescribed storage and transportation conditions, the warranty period of the 100% water-removing agent is 3 years from the date of production.Take out and cool in a decanter, weigh (accurate to 1.000) 2) the fraction of insoluble matter in the sample w (wt). Calculate according to formula (81): m # × 100
Where:
the total mass of the dried block and the water-soluble matter, in grams (g); the constant temperature after drying, in grams (wt%)
the yield of the test substance, in grams (wt%).
4.8 Release stability test
4.8.1 Reagents and instruments
Standard hard water: pM**1C%*1) -42mg /L., connect (B/T160320c1 medium-range should reach the preparation method: and wear, 1Gmml.,
constant temperature water bath; 30t1;
pipette: 5L..
GR19308—2003
4.9.2 test steps
use the wave tube to absorb 5 workers or columns, in _3mL and the standard water is released to the seat, mix. This amount of wave people 1℃ constant temperature water. Stand for 11. The light precipitate is 4.9 low temperature stability test
4. 9. 1 night apparatus
refrigerator, keep the temperature at 1.
4.9.2 test step
take 100m.1.0 test liquid, collect 200mL of calcined liquid, cool to 1:1 in refrigerator, store for 12h, take out and swallow, especially solid matter will be precipitated as solid matter, 4.10 thermal run qualitative test
4.10.1 receiver
conservative box (or warm water): :
safe or 54 pieces of sealed glass? :
medical injection warning: 50nL,
4.10.2 test step weak
Put the test sample in a coolant-free environment (avoid direct blood drawing) and place it in a cooling container (avoid volatilization of the potential agent). Seal at least 3 bottles and weigh them separately: put the evenly distributed samples in a ventilator, and then put them in another container (or a wet water bath) to keep them cool. Take out the samples and place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Take the samples and place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Place them in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). Place the samples in a coolant-free environment (or a wet water bath). 4.11 Inspection and acceptance of products
shall comply with the provisions of GH/T1614. Process according to the limit effect value and use the sodium value comparison method. 5 Marking, labeling, packaging and storage and transportation
5.1 The marking, labeling and packaging of Paraquat Aqueous Solution shall comply with the provisions of GH375. 5.2 Paraquat Aqueous Solution shall be packaged in tight bottles or polyethylene bottles, with a net content of 50ml, 200ml, 25ml or 1L per bottle, and the outer packaging shall be cartons, cardboard boxes or plastic boxes, with a net content of no more than 15kg per box. Plastic cabinets may also be used for packaging, with a net content of no more than 1kg per box. Contains 20%. Other forms of packaging can also be used according to user requirements or order agreements. However, they must comply with the current regulations of CB37%. 5.3 Paraquat aqueous solution packages should be stored in ventilated and dry warehouses. 5.4 During transportation, strictly prevent moisture and sunlight, and do not mix with food seeds and feed. Avoid contact with skin and eyes, and prevent inhalation through the mouth. 5.5 Safety: This product is moderately toxic and irritating to the eyes. It can cause eye damage. Wear goggles and leather gloves when using this product. If it accidentally gets into the eyes, open the cover, rinse with clean water, and then ask a doctor for treatment. If this product gets on the skin, rinse it immediately with water. If it is accidentally touched, induce vomiting immediately and send it to the hospital for treatment in time. Limited to 1L of 15% kaolin or 7% molybdenum clay or activated carbon suspension, and take appropriate laxatives such as glycerol or carbon at the same time. Product acceptance period: Under the prescribed storage and transportation conditions, the warranty period of the 100% water-removing agent is 3 years from the date of production.
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