304 스테인레스 스틸 감지 액체 식별 신속한 망간 함량 테스트 유체 물약 신속한 시약 분석 약물

Features:
100% new and high quality
Features: No need to power on, you can quickly distinguish the material grades of nickel stainless steel according to the redness time
In winter, the temperature is too low. Before testing, use a lighter to heat the surface for 3-6 seconds.
Put a drop of this identification on the steel surface, observe the time when the color turns red, and confirm the stainless steel grade (model). The faster it turns red, the worse the material!

200 (ordinary 201): red within 5 seconds, and red within 30 seconds is 200,200 materials are also good or bad; manganese exceeds the standard
201 (Authentic 201): turns red in about 50 seconds; manganese exceeds the standard
202: red in about 1 minute; manganese exceeds standard
301: Red in 2-3 minutes, the color is very pale, please look carefully; new national standard food grade stainless steel
304: It doesn't change red within 3 minutes, at most the bottom color becomes darker; old national standard food grade (older is better !!!)
Capacity: 12ml


package includes:
1pcs x Stainless steel testing fluid

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