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  • pH 4.01 Calibration Solution, 25x20mL, case of 25
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pH 4.01 Calibration Solution, 25x20mL, case of 25


Price: $59.33 & FREE Shipping
In stock.
Usually ships within 4 to 5 days.
Ships from and sold by Outlaw Hydroponics.
2 new from $59.32

Specifications for this item
Brand Name Hanna Instruments
Part Number HI70004P
Item Weight 1.5 pounds

Hanna's Buffer solutions are made from established formulas and are standardized with a pH met... Read full product description



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Product Features

  • Meters and solutions from Hydrofarm.
  • Backed by 100% manufacturer's warranty.
  • pH 4.01 Calibration Solution, 25x20mL, case of 25


Product Details


Product Description

Hanna's Buffer solutions are made from established formulas and are standardized with a pH meter that is calibrated to NBS/NIST primary standard buffer solutions. The 20 mL sachets are ideal for infrequent calibrations while for heavy-duty applications, you can choose from the popular 230 mL, 1 liter, or 1 gallon containers. Now the pH 4 buffers carry lot #, expiry date as well as pH/C chart on every bottle. HI 7004L/C and HI 8004L/C are also supplied with an analysis certificate.

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