for our Ph Tester, generally we offered PH4.00, PH6.86, PH9.18, powder 3 packets for each unit. Pls take a look our package photo, yo will see it what look like:

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Mar 28, 2019
for our Ph Tester, generally we offered PH4.00, PH6.86, PH9.18, powder 3 packets for each unit. Pls take a look our package photo, yo will see it what look like:

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