Pretreatment Reducing Solution for ORP Electrodes, 500 mL, Hanna Instruments, HI7091L
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Pretreatment Reducing Solution for ORP Electrodes, 500 mL, Hanna Instruments, HI7091L

Pretreatment Reducing Solution for ORP Electrodes, 500 mL, Hanna Instruments, HI7091L

Item: 92-1624-33-EA
UOM: EA (1)
Price:
$34.99

Description

Hanna Instruments® Pretreatment Reducing Solution for ORP Electrodes, 500 mL, HI7091L

Features:

  • Appearance:
    • Reducing Pre-Treatment Solution Component I:  light blue powder
    • Reducing Pre-Treatment Solution Component II:  colorless liquid
    • Reducing Pre-Treatment Solution - Mixed:  light green liquid
  • CAS Nos.:
    • Reducing Pre-Treatment Solution Component I: 
      • Iron (II) Sulfate:  7782-63-0
    • Reducing Pre-Treatment Solution Component II:
      • Sulfuric Acid:  7664-93-9
    • Reducing Pre-Treatment Solution - Mixed: 
      • Iron (II) Sulfate:  7782-63-0
  • Reducing pretreatment solution for conditioning an ORP electrode used to measure reduction reactions
  • Air tight bottles with tamper-proof seals to ensure the quality and clearly marked with lot number and expiration date on label
  • ORP (Oxidation Reduction Potential) electrodes are used to measure chemical reaction in which one species is being oxidized and another is being reduced
  • Loss of electrons by element or compound is known as oxidation reaction while gaining of electrons by element or compound is known as reduction reaction
  • For example, plating companies that have hexavalent chromium (Cr6+) in their wastewater must reduce it to a safer trivalent chromium (Cr3+) form
  • This reduction reaction occurs in presence of a strong reductant such as sodium metabisulfite
  • Addition of reductant must be measured with an ORP electrode to ensure that there is an adequate reducing potential
  • Reducing pretreatment solution prior to taking a measurement provides for a faster response time in a reducing environment
  • To use, soak the ORP electrode in the pretreatment solution for 15 minutes prior to use
  • As a general rule, if mV reading corresponding to the pH measurement is lower than value in table below, HI7091L (92-1624-33) reducing pretreatment solution is used
  • If mV reading corresponding to pH measurement is higher than value in table below, HI7092L (92-1624-32) oxidizing pretreatment should be used
pH Value mV Value pH Value mV Value pH Value mV Value pH Value mV Value pH Value mV Value
0 990 3 800 6 640 9 460 12 280
1 920 4 740 7 580 10 400 13 220
2 860 5 680 8 520 11 340 14 160

Specifications

D.O.T. Number Component I: not regulated; Component II: UN2796, 8, PG II
Manufacturer Hanna Instruments
Model No HI7091L

SDS PDFs

It is our policy to provide the latest Safety Data Sheet (SDS) for all chemicals we ship. Each shipment will contain copies for every chemical contained in the shipment, and for any chemical included in an instrument kit or calibration kit.

Contact us for additional copies of an SDS or for a copy of the Certificate of Analysis:

SDS - Reducing Pre-Treatment - Mixed
SDS -Reducing Pre-Treatment Component II
SDS - Reducing Pre-Treatment Component I

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