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  • Excellent Choice 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.
  • NIST Traceability The ingredients of Hanna pH 4 buffers are Potassium Hydrogen Phthalate. They are standardized using a pH meter calibrated by primary standard buffer solutions (NIST 186 Ie, NIST 186 IIe and NIST 185g S.R.M.). The pH value is certified traceable to NIST 185g S.R.M.




Displaying items 1 - 11 of 11
SKU Name Size MSRP Our Price  
HI 70004C : pH 4.01 buffer solution @ 25°C, Sachet (25 x 20 ml) with certificate of analysis
HI70004CHI 70004C : pH 4.01 buffer solution @ 25°C, Sachet (25 x 20 ml) with certificate of analysis
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25 x 20 mL $30.00 $30.00 More Details
HI 70004P : pH 4.01 buffer solution @ 25°C, Sachet (25 x 20 ml)
HI70004PHI 70004P : pH 4.01 buffer solution @ 25°C, Sachet (25 x 20 ml)
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25 x 20 mL $26.00 $26.00 More Details
HI 7004/1G : pH 4.01 buffer solution @ 25°C, Bottle, 1 US Gallon
HI7004/1GHI 7004/1G : pH 4.01 buffer solution @ 25°C, Bottle, 1 US Gallon
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1 x 1 gal $43.00 $43.00 More Details
HI 7004/1L : pH 4.01 buffer solution @ 25°C, Bottle, 1 L
HI7004/1LHI 7004/1L : pH 4.01 buffer solution @ 25°C, Bottle, 1 L
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1 x 1 L $17.00 $17.00 More Details
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HI7004LHI 7004L : pH 4.01 buffer solution @ 25°C, Bottle, 0.46 L
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1 x 460 mL $14.00 $14.00 More Details
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HI7004L/CHI 7004L/C : pH 4.01 buffer solution @ 25°C, Bottle, 0.46 L with certificate of analysis
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1 x 460 mL $19.00 $19.00 More Details
HI 7004M : pH 4.01 buffer solution @ 25°C, Bottle, 0.23 L
HI7004MHI 7004M : pH 4.01 buffer solution @ 25°C, Bottle, 0.23 L
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1 x 230 mL $12.00 $12.00 More Details
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HI7004P/5HI 7004P/5 : pH 4.01 buffer solution @ 25°C, Sachet (500 x 20 ml)
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500 x 20 mL $424.00 $424.00 More Details
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HI77400CHI 77400C : pH 4.01 & pH 7.01 buffer solution @ 25°C, Sachet (10 x 20 ml) (10 pcs, 5 pcs each) with certificate of analysis
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10 x 20 mL $16.00 $16.00 More Details
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HI77400PHI 77400P : pH 4.01 & pH 7.01 buffer solution @ 25°C, Sachet (10 x 20 ml) (10 pcs, 5 pcs each)
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10 x 20 mL $15.00 $15.00 More Details
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HI8004L/CHI 8004L/C : pH 4.01 buffer solution @ 25°C, Bottle, 0.46 L FDA approved bottle with certificate of analysis
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1 x 460 mL $28.00 $28.00 More Details

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