Calibration Gas, Instruments & Calibration Services
Instruments & Gas Detectors
Portable, fixed & wireless — plus flow, pressure & temperature. RKI, Senko, OTIS, MSA & more
Calibration Gas
Standard 4-gas & specialty mixes, NIST-traceable with a Certificate of Analysis
Calibration Services from $55
Ship-in (3–5 days) or on-site fleet service — QR-verifiable certificates with every instrument
Help From Real Technicians
No phone tree. Call 865-900-8844 and talk to someone who actually calibrates this gear
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Gas detection, calibration gas, instrumentation & more — from the brands you trust.
Never Miss a Calibration Due Date Again
Every instrument you calibrate with CPS is tracked in our own calibration software — ship it in, drop it off, or have us come to you. You never chase dates or paperwork again. We watch them for you.
A New Name. 30+ Years of Hands-On Experience.
CPS Calibrations hasn’t been around forever — and we won’t pretend otherwise. What we bring is the people: owners Derek Farmer and Kendall Smith have a combined 30+ years working hands-on with gas detection, calibration gas, and instrumentation. We built CPS in Rockwood, Tennessee to do it better — modern software, honest pricing, and people who answer the phone.
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Wiha TorqueVario-S Bit Set, 59 Piece, In/lbs Handles (28589)
Wiha
MSRP: $639.97$479.98Most torque work goes wrong at the low end, where one oversized driver gets pressed into service for a spec it was never calibrated to hit. The 59 Piece TorqueVario-S Bit Set solves that with three... -
Wiha Ratcheting Wrench Tray Set, 31 Piece, SAE & Metric (30392)
Wiha
MSRP: $633.31$474.98Wiha's Combination Wrenches have a 12-point box-end design with contact points that apply force to the flat sides of the fastener head — rather than the corners — to prevent the fastener head from... -
Wiha Insulated Socket & Ratchet Set, 13 Piece, 1/4" Drive, Metric (31391)
Wiha
MSRP: $513.31$384.98Every single Wiha insulated tool is individually tested to 10,000 volts AC and rated to 1,000 volts AC (1,500 volts DC) for safety and peace of mind in energized applications. All Wiha Insulated... -
Wiha Insulated Socket & Ratchet Set, 13 Piece, 1/4" Drive, SAE (31390)
Wiha
MSRP: $513.31$384.98Every single Wiha insulated tool is individually tested to 10,000 volts AC and rated to 1,000 volts AC (1,500 volts DC) for safety and peace of mind in energized applications. All Wiha Insulated...
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Bestselling
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Oxygen (O₂) 800 ppm Calibration Gas – Nitrogen Balance
Calibration Gas
MSRP: $60.00 - $210.00$45.00 - $325.00 -
Oxygen (O₂) 0.4% Calibration Gas – Nitrogen Balance
Calibration Gas
MSRP: $60.00 - $210.00$45.00 - $325.00 -
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RKI 10.6 & 10.0 eV PID Replacement Lamp for GX-6000, GX-6100, EAGLE 2 & VOC Pro
RKI Instruments
$284.00
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Wiha Insulated Socket & Ratchet Set, 13 Piece, 1/4" Drive, Metric (31391)
Wiha
MSRP: $513.31$384.98 -
Recent Posts
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Calibration Gas for PID Instruments: Isobutylene and the 100 ppm Standard
A PID is calibrated on 100 ppm isobutylene — not on the gas you are measuring — because the instrume …Nov 14th 2026 -
OTIS OtisLink: How Remote Gas Detection Reports From Sites With No One There
OTIS OtisLink is a cellular/satellite hybrid telemetry kit ($2,805–$4,740 configured) that connects …Nov 13th 2026 -
Can You Add a Pump to a SENKO SGT-P or MGT?
Yes — SENKO's SP-Pump101 external sampling pump ($330, part AAA006000) fits the SGT, SGT-P, and MGT, …Nov 12th 2026