The Technical Vault By SOSCleanroom
Analytical Reagents | Acetate Buffer Chemistry | USP Test Solutions | pH Control | Laboratory Quality Assurance
RICCA 62-32 Acetate Buffer TS: Chemistry, USP Test Solution Applications & Laboratory Qualification
RICCA Chemical Company Acetate Buffer TS, catalog number 62-32 and part number R0062000-1A, is a prepared aqueous buffer intended for general laboratory reagent use and analytical methods specifying Acetate Buffer TS.
The manufacturer's published specification establishes a pH acceptance range of 5.90-6.00 at 25°C, a recommended storage temperature of 15-30°C, and an unopened shelf life of 24 months. This Technical Vault provides product-specific chemistry, formulation information, method considerations, handling requirements, and documentation guidance.
Technical Takeaway: RICCA Acetate Buffer TS is a defined test-solution formulation containing ammonium acetate and acetic acid. Its pH specification, composition, storage requirements, and safety classification are different from RICCA's pH 3.5 acetate buffer. Select the exact reagent specified by the approved analytical procedure.
1. Analytical Context: What Is Acetate Buffer TS?
The designation TS means Test Solution. Acetate Buffer TS is a specified laboratory reagent used when an analytical procedure calls for this buffer formulation.
Acetate buffer systems function through acid-base equilibria involving acetic acid and acetate ions. Their role is to resist changes in acidity within the limits of the formulation's buffer capacity and the conditions of the analytical procedure.
Method qualification: The TS designation identifies a reagent type, but suitability for a particular assay must be established against the current applicable method, monograph, or laboratory SOP.
2. Verified Product Specifications
- Manufacturer: RICCA Chemical Company
- Product Name: Acetate Buffer TS
- Catalog Number: 62-32
- Extended Part Number: R0062000-1A
- Manufacturer Product Family: 62
- pH Acceptance Range: 5.90-6.00 at 25°C
- Physical State: Liquid
- Appearance: Colorless
- Relative Density: 1.05 (SDS Section 9)
- Water Solubility: Miscible
- Container: Natural polyethylene bottle
- Volume: 1 liter (1,000 mL)
- Ordering Quantity: One (1) bottle
- Unopened Shelf Life: 24 months
- Storage: 15-30°C (59-86°F)
- Recommended Use: General laboratory reagent
- GHS Classification: Not classified as hazardous in the referenced SDS
- DOT Classification: Not regulated in the referenced SDS
Receiving Control: Confirm product identification, lot number, container integrity, manufacturer expiration labeling, and method requirements before releasing the reagent for analytical use.
3. Chemical Composition and CAS Identification
RICCA's Acetate Buffer TS Safety Data Sheet identifies the following mixture components and weight percentages:
- Water: CAS 7732-18-5; 69.14% by weight
- Ammonium Acetate: CAS 631-61-8; 30.36% by weight
- Acetic Acid: CAS 64-19-7; 0.50% by weight
Ammonium acetate provides acetate ions, while acetic acid contributes the corresponding weak-acid component of the buffering system. The composition is engineered to achieve the product's specified analytical properties.
The manufacturer's specification identifies ACS-grade ammonium acetate and acetic acid, with water identified as ACS/ASTM/USP/EP grade.
Chemical Identification: Acetate Buffer TS is a mixture and should not be represented by a single chemical CAS number. For regulatory or analytical documentation, identify the finished reagent by RICCA product number 62 and its applicable catalog number.
4. pH Control and Manufacturer Testing
RICCA specifies an acceptance range of pH 5.90-6.00 at 25°C for product family 62. Its product specification cites internal test methods SQCP027 and SQCP033.
The specification identifies NIST Standard Reference Materials used in support of the published pH measurement and describes calibration and traceability controls for volumetric glassware, balances, and temperature-measurement equipment.
- Specified pH Measurement Temperature: 25°C
- Acceptance Range: 5.90-6.00
- Manufacturer Methods: SQCP027 and SQCP033
- NIST SRM References: 185i, 186-I-g, and 186-II-g
Important Distinction: References to calibrated measurement systems and NIST materials do not automatically designate the finished reagent as a certified pH calibration standard. Use a separately qualified calibration material when required by the instrument calibration procedure.
5. USP Test Solution Applications and Method Compatibility
RICCA's product specification identifies the formulation as Acetate Buffer TS with a USP reference. Such reagents are used in procedures that prescribe a specific test solution to establish controlled analytical conditions.
In a regulated laboratory, the term "USP formulation" should not be interpreted as universal approval for every USP analytical method. The laboratory must confirm that the selected reagent matches the current procedure and any applicable method-specific requirements.
- Confirm the current method or compendial reference.
- Verify the specified buffer identity and formulation.
- Evaluate method-specific pH and chemical composition requirements.
- Verify lot documentation and laboratory acceptance criteria.
- Document any permitted reagent substitutions through the appropriate quality process.
Analytical Control: The manufacturer's general product specification supports reagent selection but does not replace method validation, system suitability, or laboratory quality-system requirements.
6. Storage, Shelf Life and Stability
RICCA specifies a recommended storage temperature of 15-30°C (59-86°F) and a shelf life of 24 months for an unopened container.
The SDS instructs users to protect the solution from freezing and physical damage. It identifies the formulation as stable under normal conditions of use and storage.
- Store: At 15-30°C under appropriate laboratory conditions.
- Protect: From freezing, contamination, and physical damage.
- Close: Keep the original bottle securely closed when not dispensing.
- Inspect: Check labeling, appearance, and container integrity before use.
- Track: Follow manufacturer dating and any laboratory-specific in-use expiration rules.
- Avoid: Contact with strong oxidizing materials identified as incompatible in the SDS.
Shelf-Life Qualification: The 24-month shelf life applies to unopened containers. It does not establish an automatic 24-month in-use period after opening. Follow the manufacturer's lot labeling and the laboratory's approved procedures.
7. Best-Practice Laboratory Handling
- Receiving: Confirm part number R0062000-1A, catalog 62-32, labeling, and lot identification.
- Qualification: Review the method-defined reagent requirements and manufacturer specification.
- Storage: Maintain the recommended temperature range and protect the bottle from freezing.
- Dispensing: Use suitably clean, chemically compatible laboratory equipment.
- Contamination Control: Avoid contact between dispensing tools and contaminated surfaces.
- Solution Integrity: Do not return unused dispensed reagent to the original bottle.
- Traceability: Record relevant lot, opening, and use information under the laboratory SOP.
- Disposal: Follow facility waste-management procedures and applicable regulations.
Quality-System Recommendation: Standardize reagent selection by the exact manufacturer part number and approved specification, rather than selecting any laboratory acetate buffer with a similar nominal pH.
8. Safety and Transportation Classification
The RICCA product-family 62 Safety Data Sheet states that Acetate Buffer TS is not categorized as hazardous in any GHS hazard class under the referenced classification criteria.
- GHS Hazard Classification: Not classified as hazardous
- GHS Signal Word: None required
- GHS Pictograms: None required
- DOT Ground Transport: Not regulated
- IATA Air Transport: Not regulated
- TDG Canada: Not regulated
- Recommended Eye Protection: Safety glasses or goggles
- Recommended Hand Protection: Chemical-resistant gloves
- Ventilation: Normal room ventilation described as adequate in the SDS
Although the solution is not classified as hazardous under the referenced GHS criteria, normal chemical laboratory precautions still apply. The SDS notes that skin or eye contact may cause slight irritation.
Safety Notice: Use the current manufacturer SDS applicable to the received product for handling, first aid, emergency response, shipping, and disposal decisions.
9. Quality Documentation and Audit Readiness
The manufacturer's published documentation provides a basis for reagent identification and purchasing controls. Regulated laboratories should determine which additional records are required for their specific applications.
- Product Specification: Defines pH range, packaging, recommended storage, and unopened shelf life.
- Safety Data Sheet: Identifies chemical composition, hazard classification, handling, and transport information.
- Certificate of Analysis: Request applicable lot-specific results when required.
- Lot Traceability: Connects purchased reagent to testing records and inventory.
- Expiration Control: Uses the actual manufacturer labeling and applicable laboratory procedures.
- Method Approval: Documents acceptance of the reagent for the intended analytical test.
The available RICCA Product Specification PDF contains a sample lot identifier rather than actual results for a purchased bottle. It should not be treated as the lot-specific Certificate of Analysis.
Audit Point: Where a current CoA is required, obtain documentation corresponding to the actual received lot.
10. Acetate Buffer Selection and Product Differences
RICCA 62-32 Acetate Buffer TS: Manufacturer pH specification of 5.90-6.00 at 25°C. Intended for methods specifying Acetate Buffer TS.
RICCA 60.1-32 pH 3.5 Acetate Buffer: A separate buffer formulation identified for USP heavy metals testing. It is not equivalent to RICCA 62-32.
RICCA 62-16 Acetate Buffer TS: The manufacturer's 500 mL natural polyethylene package of the same product family.
Other pH Control Buffers: Different formulations may have different chemical compositions, buffer capacities, impurity specifications, and method requirements.
Selection Principle: Verify the reagent designation, formulation, manufacturer specification, and analytical method before substituting any buffer solution.
11. Frequently Asked Questions
What does TS mean in Acetate Buffer TS?
TS means Test Solution. The designation identifies the reagent formulation used in specified laboratory analytical procedures.
What is the pH of RICCA 62-32?
RICCA specifies a pH acceptance range of 5.90-6.00 when measured at 25°C.
What chemicals are present?
The manufacturer SDS identifies water, ammonium acetate, and acetic acid as the mixture components.
Is the solution ready to use?
Yes. It is supplied as a prepared reagent. Follow the applicable method for any additional preparation or verification requirements.
Can this replace a pH 3.5 acetate buffer?
No direct interchangeability is established. The formulations have different specifications and must be evaluated against the approved method.
What is the shelf life?
The manufacturer specifies 24 months for unopened containers. Confirm the actual lot expiration date on the received bottle or applicable documentation.
How should it be stored?
Recommended storage is 15-30°C (59-86°F). Protect from freezing and physical damage.
Is the product hazardous for transportation?
The referenced RICCA SDS lists the product as not regulated under U.S. DOT, IATA, and Canadian TDG transportation requirements.
Is a lot-specific CoA available?
The available product specification is not a lot-specific CoA. Contact SOSCleanroom to request applicable manufacturer lot documentation.
Is the reagent sterile or ISO cleanroom-certified?
No such product-specific certification is established in the referenced manufacturer documentation. Controlled-environment use requires appropriate facility assessment and qualification.
Why Source RICCA Laboratory Reagents Through SOSCleanroom?
- Accurate Product Selection: Source the specified RICCA formulation and bottle configuration.
- Manufacturer Documentation: Assistance identifying available product specifications, SDS resources, and lot documentation.
- Laboratory Procurement: Purchase analytical reagents alongside other laboratory and controlled-environment supplies.
- Repeat Purchasing: Standardize procurement by manufacturer part number and approved material lists.
- Technical Support: Obtain sourcing assistance for reagent identification and package-size selection.
For technical sourcing or documentation assistance, contact Sales@SOSsupply.com or call 800-443-7101.
The Technical Vault By SOSCleanroom | October 12, 2026
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