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Thermo Scientific™ Orion™ pH Electrode Cleaning and Storage Solutions Available on GSA/VA Contract for Federal Government customers only.

Restore proper electrode performance and prolong electrode life using Thermo Scientific™ Orion™ pH Electrode Cleaning and Storage Solutions.

Manufacturer:  Thermo Scientific™ 900021WA

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Catalog No. 13-642-584

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Restore proper electrode performance and prolong electrode life using Thermo Scientific™ Orion™ pH Electrode Cleaning and Storage Solutions in ready to use bottles.

Cleaning Solutions

  • Solutions are identified by the letters A, B, C, and D, each letter designates a unique formulation
  • Cleaning solution A is for removing protein contaminants, cleaning solution B is for removing bacterial contaminants, cleaning solution C is for general cleaning and cleaning solution D is for removing oil and grease contaminants
  • Bottles of the ready-to-use cleaning solutions include a small beaker to hold the cleaning solution and a plastic pipet to remove the old electrode filling solution
  • pH Electrode Cleaning Solution Kit (900020) includes one bottle each of cleaning solutions A, B, C and D; one beaker and one pipet

Storage Solutions

  • Storage solution ensures that the pH electrode works properly after prolonged storage, overnight storage and between samples


The following part numbers have been changed due to a recent system upgrade.

Old Part Number: 900021

New Part Number: 900021-WA

Old Part Number: 900022

New Part Number: 900022-WA

Please use the new part number when placing an order or requesting a quote. The old and new part numbers are interchangeable on Certificate of Analysis and Material Data Safety Sheet (MSDS) files.

Description & Specifications


pH Electrode
PH Electrode
4 x 1 oz. (4 x 30mL) Bottles of Cleaning Solution A for Protein Removal, Beaker and Pipet
pH Electrode Cleaning Solution
Cleaning solution
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