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Essentials pH Buffer 4 & 7 Calibration Solutions - 250ml of each,
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This review is from: Essentials pH Buffer 4 & 7 Calibration Solutions - 250ml of each
The packaging was extremely well done.
After having removed all the bubble wrap i noticed that both bottles were wet, so one of them were leaking.
This is a problem because this stuff usually start loosing its pH value from first opening and breaking the seal. I don't know how long one of these were open on not sealed properly....