Stainless Steel Testing Reagent for Liquid Manganese Detection 304 Model Lot F5

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