Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
GASTEC Detector Tube: GASTEC GV-100, C6H6, Gas Detection Tube, Benzene ( C6H6 ) - Gas Detection Tubes For Use In GASTEC GV-100 and GV-110 Pumps
GASTECGas Detection Tubes For Use In GASTEC GV-100 and GV-110 Pumps

GASTEC Detector Tube: GASTEC GV-100, C6H6, Gas Detection Tube, Benzene ( C6H6 )

The GASTEC Detector Tube (MPN 121L) is a benzene (C6H6) gas detection tube for use with GASTEC GV-100 and GV-110 pumps, supplied in a 5-pack. It detects benzene across a measurement range of 0.1 to 65 ppm. 3G…

SKU 3G-OTH-553101

Brand
GASTEC
Item
Detector Tube: GASTEC GV-100, C6H6, Gas Detection Tube, Benzene
Category
Gas Detection Tubes For Use In GASTEC GV-100 and GV-110 Pumps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

GASTEC
Manufacturer Part Number
121L
Type
C6H6, Gas Detection Tube, Benzene ( C6H6 ), With Pump, 5 PK
Gas Detected
Benzene
Measurement Range
0.1 to 65 ppm
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

GASTEC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GASTEC Detector Tube (MPN 121L) is a benzene (C6H6) gas detection tube for use with GASTEC GV-100 and GV-110 pumps, supplied in a 5-pack. It detects benzene across a measurement range of 0.1 to 65 ppm. 3G Electric interprets this demand and delivers the genuine OEM part, backed by specialist expertise in combustion, pumps, and controls across 14 industrial departments.

Frequently Asked Questions

What is the GASTEC 121L detector tube used for?

The GASTEC 121L detector tube is used to measure benzene (C6H6) concentrations in air, typically for industrial hygiene, environmental monitoring, and safety compliance. It works with GASTEC GV-100 and GV-110 pumps to provide spot-check readings from 0.1 to 65 ppm.

What are the specifications of the GASTEC 121L benzene tube?

The GASTEC 121L detects benzene (C6H6) over a measurement range of 0.1 to 65 ppm. It is a gas detection tube designed for use with GASTEC GV-100 and GV-110 pumps. Each pack contains 5 tubes. The manufacturer part number is 121L.

Where to buy GASTEC 121L detector tubes worldwide?

3G Electric supplies genuine GASTEC 121L benzene detector tubes worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this OEM part.

How to use the GASTEC 121L tube with a GV-100 pump?

Break both tips of the GASTEC 121L tube using the tip breaker on the GV-100 pump. Insert the tube into the pump inlet with the arrow pointing toward the pump. Pull the handle fully to draw a sample; follow the pump stroke count specified on the tube label. Read the concentration at the stain boundary.

GASTEC Products

3G Electric supplies GASTEC gas detection tubes for use in gastec gv-100 and gv-110 pumps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Pump Accessories →Valves & Regulation →Motors & Drives →All Products →

More from GASTEC

View all GASTEC parts →
GASTEC Detector Tube: H2S, Gas Detection Tube, Hydrogen Sulphide ( H2S ), With Pump, 10 PK (MPN 4LT). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 0.05 to 4 ppm.
GASTEC
GASTEC Detector Tube: H2S, Gas Detection Tube, Hydrogen Sulphide ( H2S ), With Pump, 10 PK (MPN 4LT). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 0.05 to 4 ppm.
GASTEC Detector Tube: C3H6O, Gas Detection Tube, Acetone ( C3H6O ), 104°F Max Op Temp [NEW], 10 PK (MPN 151D). Key specifications — Gas Detected: Acetone; Measurement Range: 5 to 1,500 ppm.
GASTEC
GASTEC Detector Tube: C3H6O, Gas Detection Tube, Acetone ( C3H6O ), 104°F Max Op Temp [NEW], 10 PK (MPN 151D). Key specifications — Gas Detected: Acetone; Measurement Range: 5 to 1,500 ppm.
GASTEC Detector Tube: GASTEC GV-100, Hg, Gas Detection Tube, Mercury Vapor ( Hg ), With Pump, 10 PK (MPN 40). Key specifications — Gas Detected: Mercury Vapor; Measurement Range: 0.05 to 13.2 mg/m3.
GASTEC
GASTEC Detector Tube: GASTEC GV-100, Hg, Gas Detection Tube, Mercury Vapor ( Hg ), With Pump, 10 PK (MPN 40). Key specifications — Gas Detected: Mercury Vapor; Measurement Range: 0.05 to 13.2 mg/m3.
GASTEC Detector Tube: GASTEC GV-100, H2S, Gas Detection Tube, Hydrogen Sulphide ( H2S ), 10 PK (MPN 4M). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 12.5 to 500 ppm.
GASTEC
GASTEC Detector Tube: GASTEC GV-100, H2S, Gas Detection Tube, Hydrogen Sulphide ( H2S ), 10 PK (MPN 4M). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 12.5 to 500 ppm.
GASTEC Detector Tube: GASTEC GV-100, CO, Gas Detection Tube, Carbon Monoxide ( CO ), 10 PK (MPN 1H). Key specifications — Gas Detected: Carbon Monoxide; Measurement Range: 0.1 to 10%.
GASTEC
GASTEC Detector Tube: GASTEC GV-100, CO, Gas Detection Tube, Carbon Monoxide ( CO ), 10 PK (MPN 1H). Key specifications — Gas Detected: Carbon Monoxide; Measurement Range: 0.1 to 10%.
GASTEC Detector Tube: GASTEC GV-100, CO2, Gas Detection Tube, Carbon Dioxide ( CO2 ), 10 PK (MPN 2H). Key specifications — Gas Detected: Carbon Dioxide; Measurement Range: 0.5 to 20%.
GASTEC
GASTEC Detector Tube: GASTEC GV-100, CO2, Gas Detection Tube, Carbon Dioxide ( CO2 ), 10 PK (MPN 2H). Key specifications — Gas Detected: Carbon Dioxide; Measurement Range: 0.5 to 20%.
GASTEC Detector Tube: GASTEC GV-100, NH3, Gas Detection Tube, Ammonia ( NH3 ), With Pump, 10 PK (MPN 3L). Key specifications — Gas Detected: Ammonia; Measurement Range: 0.5 to 78 ppm.
GASTEC
GASTEC Detector Tube: GASTEC GV-100, NH3, Gas Detection Tube, Ammonia ( NH3 ), With Pump, 10 PK (MPN 3L). Key specifications — Gas Detected: Ammonia; Measurement Range: 0.5 to 78 ppm.
GASTEC Detector Tube: H2S/SO2, Gas Detection Tube, With Pump, 104°F Max Op Temp [NEW], 5 PK (MPN 45S). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 0.25 to 20 ppm/1.25 to 120 ppm.
GASTEC
GASTEC Detector Tube: H2S/SO2, Gas Detection Tube, With Pump, 104°F Max Op Temp [NEW], 5 PK (MPN 45S). Key specifications — Gas Detected: Hydrogen Sulphide; Measurement Range: 0.25 to 20 ppm/1.25 to 120 ppm.