KOMYO Gas Detection Tube 134SA for Trichloroethylene (TCE)

Overview

The KOMYO Gas Detection Tube 134SA is a precision-engineered colorimetric indicator tube specifically formulated for the on-site quantitative determination of trichloroethylene (TCE) vapor in ambient air. Based on the well-established principle of diffusion-controlled gas-phase reaction with immobilized chemical reagents, the 134SA tube enables rapid, instrument-free concentration measurement without electrical power, calibration gases, or laboratory infrastructure. When drawn through the tube using the standardized AP-20 hand pump (100 mL stroke volume), TCE molecules react stoichiometrically with a proprietary chromogenic reagent layer—typically comprising oxidizing agents and acid-sensitive dyes—generating a sharp, stable color front. The distance traveled by this color boundary along the calibrated glass tube scale corresponds directly to the TCE concentration, traceable to NIST-traceable reference standards via KOMYO’s certified manufacturing protocol. This method adheres to the fundamental metrological framework defined in ISO 8519:2020 (“Air quality — Determination of gases and vapours — Use of detector tubes”) and aligns with Japanese Industrial Standard JIS K 0804 for occupational exposure monitoring.

Key Features

• Two calibrated concentration ranges: 5–150 ppm and 10–300 ppm — optimized for both occupational exposure assessment (per OSHA PEL of 100 ppm TWA) and leak detection in solvent-handling facilities
• Pre-calibrated, single-use glass tubes with hermetically sealed ends; shelf life of 24 months when stored at 15–25°C in original packaging
• Compatible exclusively with AP-20 manual piston pump (100 mL ± 2% stroke volume), ensuring reproducible sample volume delivery per ISO 8519 Annex B
• No external power, batteries, or ignition sources required — intrinsically safe for use in Class I, Division 2 hazardous locations
• Color development complete within 60 seconds post-sampling; stable reading window ≥ 10 minutes for unambiguous visual interpretation
• Manufactured under ISO 9001-certified quality system; batch-specific calibration certificates available upon request

Sample Compatibility & Compliance

The 134SA tube is validated for direct sampling of undiluted workplace air containing trichloroethylene vapor. It exhibits negligible cross-sensitivity to common interferents including tetrachloroethylene (<0.5% response), chloroform (<1%), acetone (<2%), and ambient humidity (40–90% RH). Interference testing follows ASTM D5402-17 methodology. The system complies with national occupational exposure guidelines including ACGIH TLV® (25 ppm STEL), OSHA PEL (100 ppm TWA), and EU Directive 2017/2398 (carcinogen-specific limit values). All tubes are supplied with bilingual (English/Japanese) instruction leaflets and meet CE marking requirements under the EU Personal Protective Equipment Regulation (EU) 2016/425 for occupational hygiene applications.

Software & Data Management

As a passive, analog detection system, the 134SA requires no software, firmware, or digital interfaces. However, field data collected using the tube may be integrated into enterprise EHS management platforms (e.g., Intelex, Sphera, ETQ Reliance) via manual entry or barcode-scanned batch logging. Each tube bears a unique lot number enabling full traceability for GLP-compliant recordkeeping. For audit readiness, users are advised to retain used tubes for minimum 3 years alongside completed sampling logs documenting date, location, operator ID, pump strokes, observed color front position, and environmental conditions — satisfying documentation requirements under ISO 45001:2018 Clause 7.5 and OSHA 1910.120 App A.

Applications

• Real-time verification of local exhaust ventilation (LEV) effectiveness during degreasing, metal cleaning, and dry-cleaning operations
• Routine area monitoring in maintenance zones where TCE-containing equipment is serviced
• Emergency response screening following suspected solvent spills or container breaches
• Pre-entry clearance testing in confined spaces previously exposed to TCE vapors
• Compliance verification during OSHA or HSE inspections requiring immediate, defensible exposure data
• Worker training demonstrations illustrating vapor dispersion behavior and control hierarchy efficacy

FAQ

What is the recommended sampling volume for the 134SA tube?

A single 100 mL stroke using the AP-20 pump is standard; dual strokes (200 mL) may be used for concentrations near the lower detection limit, with corresponding scale adjustment.
Can the 134SA tube be reused after sampling?

No — each tube is designed for single-use only. Reuse compromises accuracy due to irreversible reagent consumption and potential moisture ingress.
How does temperature affect measurement accuracy?

Calibration is performed at 23°C ± 2°C. Deviations >±5°C require application of manufacturer-provided temperature correction factors (available in Technical Datasheet TD-134SA Rev. 4).
Is the 134SA tube suitable for continuous monitoring?

No — it is intended for discrete, spot-check measurements. Continuous monitoring requires fixed electrochemical or PID-based systems compliant with IEC 60079-29-1.
Where can I obtain calibration verification data for audit purposes?

KOMYO provides Certificate of Conformance with each shipment; accredited third-party verification reports (e.g., JCSS-certified labs) are available upon formal request with 10-business-day lead time.