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Reviews around yellow (1.54 of 5)
Apera Instruments AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration
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If your debating on getting this vs the cheap $12 yellow pens get this.... those pens are junk they never held calibration for me
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Previous to this I had been trying to use the cheap yellow and black ph meter
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(the cheap yellow pen
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Wish I would have stopped buying the cheap yellow ones years ago
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This meter has a nice cap with an O-ring that does not leak, so I expected it to last a while
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