TOPWAY PH Calibration Powder Solution Buffer, PH 4.00 + PH 6.86, 8Pcs 250ml Ideal for PH Meter Accurate Calibration
TOPWAY
No need to measure, just mix each packs with 250mL distilled water, very easy to use. 8Pcs premium combination, include 4x PH4.01, 4x PH6.86 calibration solution for your multiple needs. Individual sized packets can be tucked in drawer, bag or suitcase for travel. The solution accuracy is ±0.01pH, that can be calibrated with the specified pH values. Great for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics., Manufacturer: TOPWAY
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