Hach pH Powder Pillows

[Spartan1979]

I just bought some of these to calibrate my pH meter.

Does the pillow dissolve in water or do you have to open them. I'm thinking the latter, but I just wanted to make sure.

 

[ajdelange]

Yes, you have to open them. Toenail clippers (what Hach supplies with their kits that use other chemicals packaged this way) as do diagonal cutters.