First, the test method 1 sensory requirements test 1.1 Appearance: visual inspection.
1.2 Odor: Nose smell.
1.3 color: visual inspection.
2 physical and chemical requirements inspection 2.1 wax core exposed length: Take four candles, with a caliper or ruler to measure the length of wax core exposed.
2.2 Wax Core eccentricity: Take 4 candles and use a vernier caliper to measure the distance between the wax core and the center of the two vertical sections of the candle at one-third and two-thirds of the candle. Take each candle to its maximum value.
2.3 Vertical stability: Take 4 candles and place them on a plane with an inclination of 8°. Do not tip over in all directions.
2.4 Melting Point: Determined according to GB/T 2539 (1981) Paraffin melting point (cooling curve).
2.5 Combustion performance: take 4 candles, 200mm apart, in the absence of wind, at room temperature 15 ~ 25 °C environment, the candle from burning to burn out extinguished, observe the combustion once every 30min, the flame should be steady, burning silent , no self-extinguishing, no wax, naked smoke can not be seen. If the burning time exceeds 6h, then 6h is the combustion cycle.
2.6 Flame height: Take 4 candles, and in the absence of wind, in the room temperature 15 ~ 25 °C environment, ignite for 30min, 60min, using a ruler to measure the height of the flame from the lowest point to the highest point, each candle to take its average .
2.7 Burning time: Take 4 candles, and in a no-wind state, use a timer to measure the time it takes for the candle to go from ignition to extinguishment and extinguishment at room temperature of 15 to 25°C. If the burning time exceeds 6h, then 6h is the combustion cycle. That is, the candle is extinguished for 24 hours when it is burned for 6 hours, and the test is continued.
2.8 Thermal stability 2.8.1 The main equipment: a constant temperature incubator, accuracy: ± 1 °C.
2.8.2 Measurement procedure: Take a sample of a small package (usually 5 to 10), place it in a constant temperature box at 38±1°C, keep it for 24 hours, remove it and return it to room temperature, observe whether there is any branch, deformation, and discoloration. phenomenon.
2.9 Combustion afterglow: Take 2 candles, and in the no-wind state, in the environment of 15-25°C, ignite for 30 minutes, extinguish the candle, and measure the time when the wax core goes out to be smoke-free. Take the average value.
2.10 Light stability 2.10.1 Main instrument: One 30W UV light box.
2.10.2 Determination Procedure: Take a sample of a small package (usually 5 to 10) flat in the ultraviolet light box, after 48 hours of ultraviolet light irradiation, the color of the candles and the original candle is basically the same.
2.11 Net content: Take 10 weighed and compared with the net content of the label, it shall comply with the “General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Order No. 75 “Administrative Measures for Quantitatively Quantified Commodity Measurement and Supervision”.
Second, the inspection rules 1 test classification 1.1 factory inspection Each batch of products before leaving the factory must be inspected by the factory quality inspection department before leaving the factory, factory inspection items 4.1,4.2,4.3.
1.2 Type inspection The type inspection project is all the requirements of this standard. It shall be conducted once a year during normal production. When there is one of the following conditions, a type inspection shall be carried out.
a) When raw materials, processes have major changes or formulation adjustments may affect product quality;
b) When the production is resumed after a long-term shutdown;
c) When there is a big difference between the factory inspection result and the previous type inspection result;
d) When the national industry management department and the national quality supervision department put forward the type inspection requirements.
1.3 batches and sampling The same batch of feed, the same batch of products produced in a batch of specifications for the production of a batch, from each batch of products randomly selected samples meet the inspection quantity, after inspection by the factory inspection department, with the product certificate before leaving the factory.
2 Judgment rules If one of the inspection results is inconsistent with the requirements of this standard, it may be doubled in the same batch of products for re-inspection. For unqualified items, the results of the retest shall prevail. -----------------------------------------------shijiazhuang zhongya cancdle co,.ltd .candle inspection to each white candle
Shijiazhuang Zhongya Candle Co,. Ltd.
