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Gas Detection

Portable single-gas and multi-gas monitors, fixed detectors, calibration gas and kits, docking stations, sensors, pumps and detector tubes from RKI Instruments, Honeywell BW, MSA and Draeger. RKI monitors are built, calibrated and repaired by Bayshore; call Mon–Fri 7:30–4 Pacific if you are not sure which sensor or range you need.

In this category

1559 products from RKI Instruments, BW Technologies / Honeywell Analytics, MSA, Draeger, Industrial Scientific and 4 more brands. Gases Detected: LEL (538), O2 (181), H2S (70), CO (61), VOC (PID) (24), Combustible Gas (LEL) (18) and 117 more. Number of Gases: 4 (200), 3 (195), 2 (189), 1 (153), 5 (108), 6 (85). Sample Method: Diffusion (469), Pump (sample draw) (461). Battery: Li-Ion (452), Alkaline (178), Alkaline & Li-Ion (157), Rechargeable Li-Ion (20), Sealed (non-replaceable) (1). Sold individually (371), by the box (114), by the pack (43).

Brands in this category: RKI Instruments (862) · BW Technologies / Honeywell Analytics (262) · MSA (206) · Draeger (190) · Industrial Scientific (29) · Gastec (6) · Honeywell Analytics (2) · Air Systems International (1) · Environmental Express (1)

Browse by type

Portable Gas Monitors (941) · Detector Tubes & Pumps (190) · Gas Monitor Accessories (150) · Calibration Kits & Calibration Gas (88) · Sensors (88) · Gas Monitor Replacement Parts (53) · Batteries & Chargers (48) · Breathing Air Testing (14) · Fixed Gas Detectors (1)

How to read a gas monitor specification

A gas monitor lists the gases it detects, the sensor type and the measuring range for each (for example 0 to 100% LEL for combustibles, 0 to 25% volume for oxygen, 0 to 100 ppm for H2S), its alarm set points, battery run time, and intrinsic safety approvals (UL or CSA Class I Division 1 marks). Calibration gas and bump-test schedules follow the manufacturer's manual.

Ratings and specifications on this page are shown as published by the manufacturer or the named standard and describe performance in that standard's test. They are not a recommendation for any task. The employer's hazard assessment decides what protective equipment a job needs. Verify details against the manufacturer's current documentation before you buy.

Draeger tube finderEvery Dräger detector tube we carry, grouped by gas, with Draeger's measuring ranges side by side. Search by gas or part number and add to cart. OPEN THE FINDER ›
Batteries & Chargers Breathing Air Testing Calibration Gas & Kits Detector Tubes & Pumps Fixed Gas Detectors Gas Detector Sensors Gas Monitor Accessories Gas Monitor Replacement Parts Portable Gas Monitors
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How to buyCard, purchase order or invoice terms; quotes on request; agencies and institutions welcome.
Live Service & SupportReal people who know the products, Monday to Friday 7:30am to 4pm Pacific. 925-215-7337
We DeliverWe ship nationwide. Parcel and LTL freight to job sites and businesses across the U.S.