... Test KitModel: LH-P09Type: semi-quantitativeColor reaction: none color -pinkReference point: 0.002mg/LPackaging detail: 50tests/boxShelf life ... methods;Produced from imported materials, including color agent, buffer agent, spiking agent, and covering agent, etc;Standardized precise colorimetric card which ... minutes.4. Compare the shown color of tube2 with tube 1, if the color is lighter than tube1, ...