Glass-Drop Checker (Size-M) with CO2 Test 15ml with Free Sucker *   1Pcs 

 

Instruction:

1.Turn drop checker up-side-down
2.place 10~15 drops of test solution into the drop checker.
3.The color should be changing on the solution according to Co2 content and please use 
 

the table provide:

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HTB1tTUpHVXXXXbbXFXXq6xXFXXXZ

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