Cole-Parmer 601SP CO₂ Quick Test Tube for Compressed Air
| Brand | Cole-Parmer |
|---|---|
| Model | 601SP |
| Detection Range | 100–3000 ppm CO₂ |
| Origin | Japan |
| Tube Type | Colorimetric Gas Detection Tube |
| Application | Compressed air systems (cylinders, tanks, pipelines) |
| Packaging | Single tube, individually sealed |
Overview
The Cole-Parmer 601SP CO₂ Quick Test Tube is a precision-engineered colorimetric gas detection system designed specifically for quantitative measurement of carbon dioxide (CO₂) in compressed air environments. Based on the principle of length-of-stain colorimetric analysis, the tube contains a chemically impregnated silica gel reagent that undergoes a stoichiometric reaction with CO₂, producing a visible chromatic front whose length is directly proportional to the gas concentration. This method complies with ISO 8573-1:2010 Annex B and ASTM D6245–21 guidelines for spot-check verification of compressed air quality in critical breathing-air applications. The 601SP is calibrated for use at standard temperature (23 °C) and atmospheric pressure following controlled decompression—ensuring traceable, field-deployable results without reliance on electronic instrumentation.
Key Features
- Targeted CO₂ range: 100–3000 ppm, optimized for occupational health thresholds and breathing-air purity standards (ISO 8573-1 Class 1–3)
- Integrated compatibility with the P-40R pressure reduction adapter—enabling safe, standardized sampling from high-pressure sources up to 300 bar
- Pre-calibrated single-use glass tube with integrated calibration scale etched on the outer surface for direct visual readout
- Reagent formulation engineered for minimal cross-sensitivity to CO, NOₓ, hydrocarbons, and moisture under typical compressed air matrix conditions
- Stable shelf life of 24 months when stored at 15–25 °C in original aluminum foil pouch; no refrigeration required
- Conforms to EN 132–2021 requirements for personal protective equipment (PPE) air quality verification in fire service and diving operations
Sample Compatibility & Compliance
The 601SP tube is validated for use with compressed air sourced from industrial cylinders, bulk storage tanks, distribution pipelines, and mobile breathing-air systems. It is routinely deployed in oxygen manufacturing facilities, fire department SCBA cylinder certification workflows, commercial diving air compressors, and pharmaceutical cleanroom air supply monitoring. Each batch undergoes factory calibration against NIST-traceable CO₂ reference gases and is supplied with a Certificate of Conformance indicating lot-specific calibration data. The test method satisfies OSHA 1910.134 Appendix A requirements for qualitative/quantitative verification of Grade D breathing air, as well as EU Directive 2016/425 Annex II criteria for respiratory protective devices.
Software & Data Management
As a manual, analog detection system, the 601SP requires no software, firmware, or digital interface. All measurements are recorded visually and documented manually per GLP-compliant field logbooks or facility-specific QA forms. For laboratories operating under FDA 21 CFR Part 11 or ISO/IEC 17025 frameworks, users may integrate tube readings into LIMS via structured entry templates—assigning unique sample IDs, operator signatures, environmental conditions (temperature, pressure), and P-40R adapter serial numbers. Audit trails remain fully traceable through physical tube retention (per ISO/IEC 17025 §7.8.1) and dated calibration certificates.
Applications
- Routine QC screening of medical-grade and industrial breathing air prior to cylinder filling or deployment
- Emergency response verification of air purity in fire station cascade systems and mobile air replenishment units
- Periodic validation of oil-free compressor output in pharmaceutical manufacturing compressed air networks
- Field verification of CO₂ scrubber efficiency in closed-circuit diving rebreathers and hyperbaric chambers
- Compliance checks during third-party ISO 8573-1 audits for Class 1–3 air purity certification
- Training and competency assessment for safety officers conducting compressed air quality assessments
FAQ
How is the 601SP calibrated and traceable to international standards?
Each production lot is calibrated using NIST-traceable CO₂ reference gases across the full 100–3000 ppm range. Calibration certificates list uncertainty budgets per ISO/IEC 17025 and include metrological traceability statements.
Can the 601SP be used without the P-40R adapter?
No—the tube is rated only for atmospheric pressure sampling. Direct connection to pressurized lines will cause reagent channeling and invalid results. The P-40R adapter is mandatory for pressure reduction and flow control.
What is the recommended sampling duration and draw volume?
Standard protocol specifies 100 mL of air drawn at 100 mL/min using the included dual-scale glass syringe (model S-100). Deviations require recalibration per ASTM D6245–21 Annex A.
Does humidity affect measurement accuracy?
The reagent is stabilized against interference from relative humidity up to 95 % RH at 23 °C. Condensation inside the tube must be avoided; samples should be dried if dew point exceeds 5 °C.
Is the 601SP compliant with FDA or EU GMP requirements for pharmaceutical air monitoring?
Yes—when used within documented SOPs and supported by retained tubes, calibration records, and operator training logs, it fulfills Annex 1 and EU GMP Chapter 5 expectations for compressed air qualification.
