Gastec P-131-H Permeation Tube Vinyl Chloride Calibration

Description

Precision Gas Calibration with Gastec P-131-H Permeation Tube Vinyl Chloride

Reliable analytical testing requires a constant and accurate gas source for instrument verification. The Gastec P-131-H Permeation Tube Vinyl Chloride utilizes advanced permeation technology to generate specific gas concentrations for calibration purposes. By maintaining the tube at a stable temperature, the liquified Vinyl Chloride within the tube permeates through the wall at a predictable rate, creating a highly precise calibration standard.

This method is significantly more effective than using traditional gas cylinders for low-concentration mixtures, which can be prone to instability over time. The P-131-H serves as a primary standard for calibrating gas chromatographs and various specialized gas detectors used in industrial hygiene. While individual permeation tubes may have slight variations in their permeation rates, the system is designed to provide a highly controlled environment for professional gas generation.

Brand

Gastec

Although, technology is always evolving, one demand on our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further.

GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.

Specifications

Based on the official technical documentation for this series:

Model Number: P-131-H.
Chemical Component: Vinyl Chloride ( $CH_{2}=CHCl$ ).
Concentration Range: 0.14 – 5.6 ppm.
Generation Method: Permeation tube (liquified gas).
Accuracy Note: Individual differences in permeation rates may cause slight deviations from the standard range.

Features

Vinyl Chloride Specific: Dedicated to generating precise concentrations of vinyl chloride (C₂H₃Cl, CAS 75-01-4), a critical and highly regulated volatile organic compound (VOC) and known human carcinogen.
Gravimetric Permeation Technology: Contains liquid vinyl chloride sealed within a specially engineered fluoropolymer tube (e.g., Teflon®/FEP). The VCM permeates through the tube walls at a constant, temperature-dependent rate, which is determined gravimetrically to provide a certified emission rate (e.g., ng/min or µg/min).
Primary Standard with Full Traceability: Each tube is individually certified, accompanied by a detailed calibration certificate listing its unique serial number, certified emission rate at a specified temperature, and traceability to national standards (e.g., NIST), ensuring compliance with rigorous quality and regulatory protocols.
Exceptional Stability & Repeatability: When maintained at a constant temperature within a dedicated permeation oven, it delivers an extremely stable and repeatable output over its entire service life, essential for dependable calibration.
Safe, Cylinder-Free Operation: Removes the serious safety risks of storing and transporting pressurized cylinders of highly toxic and flammable VCM. The tube contains only a minute, non-pressurized quantity of the chemical.
Extended Service Life: Offers a long operational lifespan, typically one to two years, providing a cost-effective and continuous source of calibration gas.

Applications

Industrial Hygiene & Worker Safety Monitoring: Primary calibration standard for personal and area gas monitors used to ensure workplace exposure to vinyl chloride remains below OSHA PEL and ACGIH TLV limits, particularly in PVC manufacturing and chemical industries.
Environmental & Fenceline Monitoring: Calibration of continuous ambient air monitors (CAMS) and fenceline detection systems at chemical plants and hazardous waste sites to track VCM emissions and ensure regulatory compliance (e.g., with EPA regulations).
Analytical Laboratory Calibration: Used to prepare precise standard mixtures for calibrating Gas Chromatographs (GC), Gas Chromatograph-Mass Spectrometers (GC-MS), and other laboratory analyzers for VCM quantification in air, water, or product samples.
Emergency Response Equipment Calibration: Provides a safe means to calibrate portable PID and FID detectors used by HazMat teams and emergency responders for incidents involving VCM releases.
Sensor & Instrument Validation: Serves as a precise vapor source for performance testing, linearity checks, and validation of new or existing VCM sensors and detection systems.