Identification of raw herbs 1. Imported blood processing (hand, crown): flat and rectangular, size, weight, generally 6-8cm in diameter, thickness of about 4cm, weight 120- Blood exhaustion 150g. The surface is dark red or black and red, shiny, often accompanied by a pink powder made of friction. The bottom is flat and the top has a longitudinal fold formed during the dressing process. Hard and brittle and brittle. The broken surface is black and red, bright, and the powder is red blood. Odorless, tasteless. 2. The original blood was flat, round or irregular block, ranging in size. The surface is red-brown, red, brick red. Glossy section. The powder is red blood. Odorless, tasteless. 3. Take the powder of this product, place it on a white paper, and bake it with fire to melt it, but no traces of spreading oil appear bright red to the light. Burning with fire produces a snuffing smoke. 4. Take this product powder about 0.1g, add ether 10ml, stuffed, shake for 10 minutes, filtered, the filtrate as a test solution. Another blood control drug 0.1g, with the legal system as a reference drug solution. According to the TLC test, draw 10 to 20 μl of each of the test solution, reference drug solution, and the reference substance of Diclofenac perchlorate in the [Determination] items, and place them on the same silica gel G thin plate. Chloroform-methanol (19:1) was developed, developed, removed, and allowed to dry. In the chromatogram of the test sample, the same orange spot was observed at the position corresponding to the chromatogram of the reference drug substance; the same orange spot was observed at the position corresponding to the chromatogram of the reference substance. 5. Take this product powder about 0.5g, add ethanol 10ml, stuffed, shaken for 10 minutes, filtered, the filtrate plus dilute hydrochloric acid 5ml, mixing, precipitated a brown-yellow precipitate, gradually condensed into a brown-black resin after standing. Take the resinous substance, wash thoroughly with 10ml diluted hydrochloric acid, discard the lotion, add 20% potassium hydroxide solution 10ml, grind, add chloroform 5ml, remove the separation funnel, shake, chloroform layer is red, take The chloroform layer was used as the test solution. Another blood reference drug, with the legal system as a reference drug solution. According to the TLC test, 10 to 20 μl of each of the test solution and the control drug solution were pipetted, and they were spotted on the same silica gel G plate, and developed with chloroform-methanol (19:1) as a developing agent, taken out, and dried. dry. In the chromatogram of the test sample, the same orange spots were observed at the positions corresponding to the chromatograms of the reference herbs. Fiberglass safety helmet Fire Safety Helmet,Work Safety Helmet,Fiberglass Safety Helmet,Construction Safety Helmets Shandong Binzhou Yong'an Labor Protection Factory , https://www.zhuqiangsafetybelt.com