5.8.2.7 infusion bottle: capacity 30OmL, secret group with butadiene rubber anti-plug.
5.8.2.8 Straight pipette: 10mL.
5.8.2.9 Medical syringe: 1 mL.
5.8.2.10 Stainless steel tweezers.
5.8.2.11 Dryer: Φ300mm, built-in dry silicone.
5.8.3 Instrument 5.8.3.1 Constant temperature oven: 0 ~ 200 °C, sensitivity ± 1 °C.
5.8.3.2 fixed clock.
5.8.3.3 Microinjector: 1μL.
5.8.3.4 Gas chromatograph: With hydrogen flame detector.
5.8.4 Reagents 5.8.4.1 Acetone (Analytical Pure).
5.8.4.2 Ethyl acetate (Analytical Pure).
5.8.4.3 Butanone (Analytical Pure).
5.8.4.4 Isopropyl alcohol (analytical system).
5.8.4.5 Ethanol (Analytical Pure).
5.8.4.6 Toluene (Analytical Pure).
5.8.4.7 Butyl acetate (Analytical Pure).
5.8.4.8 Xylene (Analytical Pure).
5.8.5 Preparation of a standard solvent curve 5.8.5.1 Use 10 μL of a micro sample injector to inject 1 μL of standard solvent into the infusion bottle through each anti-spike and then remove it in a constant temperature oven at 80±1°C for 20 min. Put it in an oven at 50±1°C for more than 20 hours. After taking it out, use a 1mL syringe to pass the anti-plug to 0.2,0.8; 0.8,1.OmL to extract the top gas of the infusion bottle into the ocean for testing respectively, and obtain the different injection amounts of the solvent. Standard peak area.
5.8.5.2 standard solvent injection volume calculated according to (l) formula W = [(D × V1) / V2] × V3---------------------- ------------------(1)
Where: W standard - standard solvent injection volume, mg;
D——Solvent density, g/mL;
V1 - the amount of standard solvent injected into the infusion bottle, μL;
V2 - infusion bottle capacity; mL;
V3 - Enter the standard amount of the instrument, mL.
5.8.5.3 Use the area of ​​each chromatographic peak obtained as the ordinate, corresponding to the solvent injection volume W as abscissa to make the standard solvent curve of the solvent.
5.8.6 Chromatographic conditions 5.8.6.1 Glass column L1m, internal diameter 2mm.
Filler: 25% FEG-1500,301 shafted support.
5.8.6.2 ambient temperature and humidity and instrument temperature Room temperature 25 ± 1 °C, humidity 65% ​​± 5%.
The column temperature was 100°C, the vaporization chamber was 150°C, and the detector was 150°C.
5.8.6.3 The flow rate of nitrogen is 50mL/min, air is 0.5kg/cm2, and hydrogen is 0.6kg/cm2.
5.8.7 Operation method and calculation 5.8.7.1 According to the color inspection sample preparation method in GB/T 13217.1 gravure plastic ink test method, the sample is allowed to stand for 2 h after leaving the sample. Take out the sample and cut it into four pieces of 200cm2 or 5cm×10cm thin strips, immediately place it in an infusion bottle, close it with an anti-plug, and place it in a constant temperature oven at 50±1°C for 30min.
5.8.7.2 The infusion bottle containing the sample is taken out, and the sample gas in the bottle is drawn with a 1 mL syringe and injected into the chromatograph to obtain the peak area of ​​each corresponding solvent in the sample.
5.8.7.3 According to the peak area of ​​each solvent contained in the sample, find the corresponding solvent content (P) on the standard curve, and calculate the residual amount of each solvent according to (2).
W Sample = (P/S) × (V2/V1)------------------------------------ --(2)
In the formula W sample - the residual amount of each solvent in the sample, mg/m2;
n - the actual number of milligrams of each solvent in the sample, mg;
S——printed area, cm2;
V1 - injection volume, mL;
V2 - infusion bottle capacity, mL.
5.8.8 Results The total residual solvent content of the sample is expressed as the sum of the arithmetic average of the measured values ​​of two or more solvents.
6 Inspection Rules 6.1 Product Group Approval: The unit product of single unit or unit input is a batch.
6.2 Judging of unqualified batches: Each batch of products shall be sampled and tested according to GB 3186; where one or more of the technical indicators are unqualified, the batch of products shall be unqualified.
6.3 The product shall be inspected by the inspection department of the production plant in accordance with the provisions of this standard and ensure that all manufactured products shall meet the technical specifications of this standard; the product shall have a certificate of conformity, and if necessary, additional instructions and precautions shall be attached.
6.4 The product shall be sampled according to the sampling method of GB 3186 paint product. The sample shall be divided into two parts, one for sealing and the other for inspection.
6.5 The receiving unit has the right to test the product in accordance with the provisions of the scale; if it is found that the product quality does not meet the technical specifications of this standard, the supply and demand parties shall jointly re-sample and inspect according to GB3186, if they still do not meet the technical specifications of this standard , the batch of products is unqualified, the receiving unit has the right to return.
6.6 The supply and demand sides shall check and verify the packaging and quantity of the product. If any leakage or quantity of the packaging is found, the relevant parties shall be informed in a timely manner.
6.7 When disputes arise between the supply and demand sides on product quality, the product quality supervision and inspection agency shall perform the arbitration inspection.
6.8 Inspection Classification 6.8.1 The four quality indicators of color, tinting strength, fineness and viscosity are the factory inspection items.
5.8.2.8 Straight pipette: 10mL.
5.8.2.9 Medical syringe: 1 mL.
5.8.2.10 Stainless steel tweezers.
5.8.2.11 Dryer: Φ300mm, built-in dry silicone.
5.8.3 Instrument 5.8.3.1 Constant temperature oven: 0 ~ 200 °C, sensitivity ± 1 °C.
5.8.3.2 fixed clock.
5.8.3.3 Microinjector: 1μL.
5.8.3.4 Gas chromatograph: With hydrogen flame detector.
5.8.4 Reagents 5.8.4.1 Acetone (Analytical Pure).
5.8.4.2 Ethyl acetate (Analytical Pure).
5.8.4.3 Butanone (Analytical Pure).
5.8.4.4 Isopropyl alcohol (analytical system).
5.8.4.5 Ethanol (Analytical Pure).
5.8.4.6 Toluene (Analytical Pure).
5.8.4.7 Butyl acetate (Analytical Pure).
5.8.4.8 Xylene (Analytical Pure).
5.8.5 Preparation of a standard solvent curve 5.8.5.1 Use 10 μL of a micro sample injector to inject 1 μL of standard solvent into the infusion bottle through each anti-spike and then remove it in a constant temperature oven at 80±1°C for 20 min. Put it in an oven at 50±1°C for more than 20 hours. After taking it out, use a 1mL syringe to pass the anti-plug to 0.2,0.8; 0.8,1.OmL to extract the top gas of the infusion bottle into the ocean for testing respectively, and obtain the different injection amounts of the solvent. Standard peak area.
5.8.5.2 standard solvent injection volume calculated according to (l) formula W = [(D × V1) / V2] × V3---------------------- ------------------(1)
Where: W standard - standard solvent injection volume, mg;
D——Solvent density, g/mL;
V1 - the amount of standard solvent injected into the infusion bottle, μL;
V2 - infusion bottle capacity; mL;
V3 - Enter the standard amount of the instrument, mL.
5.8.5.3 Use the area of ​​each chromatographic peak obtained as the ordinate, corresponding to the solvent injection volume W as abscissa to make the standard solvent curve of the solvent.
5.8.6 Chromatographic conditions 5.8.6.1 Glass column L1m, internal diameter 2mm.
Filler: 25% FEG-1500,301 shafted support.
5.8.6.2 ambient temperature and humidity and instrument temperature Room temperature 25 ± 1 °C, humidity 65% ​​± 5%.
The column temperature was 100°C, the vaporization chamber was 150°C, and the detector was 150°C.
5.8.6.3 The flow rate of nitrogen is 50mL/min, air is 0.5kg/cm2, and hydrogen is 0.6kg/cm2.
5.8.7 Operation method and calculation 5.8.7.1 According to the color inspection sample preparation method in GB/T 13217.1 gravure plastic ink test method, the sample is allowed to stand for 2 h after leaving the sample. Take out the sample and cut it into four pieces of 200cm2 or 5cm×10cm thin strips, immediately place it in an infusion bottle, close it with an anti-plug, and place it in a constant temperature oven at 50±1°C for 30min.
5.8.7.2 The infusion bottle containing the sample is taken out, and the sample gas in the bottle is drawn with a 1 mL syringe and injected into the chromatograph to obtain the peak area of ​​each corresponding solvent in the sample.
5.8.7.3 According to the peak area of ​​each solvent contained in the sample, find the corresponding solvent content (P) on the standard curve, and calculate the residual amount of each solvent according to (2).
W Sample = (P/S) × (V2/V1)------------------------------------ --(2)
In the formula W sample - the residual amount of each solvent in the sample, mg/m2;
n - the actual number of milligrams of each solvent in the sample, mg;
S——printed area, cm2;
V1 - injection volume, mL;
V2 - infusion bottle capacity, mL.
5.8.8 Results The total residual solvent content of the sample is expressed as the sum of the arithmetic average of the measured values ​​of two or more solvents.
6 Inspection Rules 6.1 Product Group Approval: The unit product of single unit or unit input is a batch.
6.2 Judging of unqualified batches: Each batch of products shall be sampled and tested according to GB 3186; where one or more of the technical indicators are unqualified, the batch of products shall be unqualified.
6.3 The product shall be inspected by the inspection department of the production plant in accordance with the provisions of this standard and ensure that all manufactured products shall meet the technical specifications of this standard; the product shall have a certificate of conformity, and if necessary, additional instructions and precautions shall be attached.
6.4 The product shall be sampled according to the sampling method of GB 3186 paint product. The sample shall be divided into two parts, one for sealing and the other for inspection.
6.5 The receiving unit has the right to test the product in accordance with the provisions of the scale; if it is found that the product quality does not meet the technical specifications of this standard, the supply and demand parties shall jointly re-sample and inspect according to GB3186, if they still do not meet the technical specifications of this standard , the batch of products is unqualified, the receiving unit has the right to return.
6.6 The supply and demand sides shall check and verify the packaging and quantity of the product. If any leakage or quantity of the packaging is found, the relevant parties shall be informed in a timely manner.
6.7 When disputes arise between the supply and demand sides on product quality, the product quality supervision and inspection agency shall perform the arbitration inspection.
6.8 Inspection Classification 6.8.1 The four quality indicators of color, tinting strength, fineness and viscosity are the factory inspection items.
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