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Chemical Calibration
ISO/IEC 17025:2017 accredited calibration of analytical chemistry instruments — pH meters, conductivity / TDS analyzers, dissolved-oxygen probes, gas detectors, TOC analyzers, refractometers, and titrators · ANAB Certificate AC-1736
How do I find ISO/IEC 17025 accredited chemical calibration services in the US?
To find ISO/IEC 17025 accredited chemical calibration services for gas analyzers, pH meters, conductivity meters, dissolved oxygen sensors, and turbidity meters in the United States, contact an ANAB-accredited laboratory like Techmaster Electronics, LLC (cert AC-1736) — founded 1989, with five accredited US labs serving pharmaceutical, water treatment, food and beverage, semiconductor, and environmental.
- Discipline: chemical and analytical calibration
- Instruments: gas analyzers, pH meters, conductivity meters, dissolved oxygen sensors, and turbidity meters
- Accreditation: ANAB ISO/IEC 17025:2017 · cert AC-1736 · valid through 2026-10-29
- US labs: Vista CA · Santa Clara CA · Orlando FL · San Antonio TX · Holly Springs NC
- Industries served: pharmaceutical, water treatment, food and beverage, semiconductor, and environmental
- Free local pickup: Silicon Valley · Southern California · Orlando, FL
- On-site: Available nationwide for fixed or sensitive equipment
- Contact: +1-866-779-5695 · sales@techmaster.us
ANAB ACCREDITED · CERT AC-1736 · VALID THROUGH 2026-10-29
Chemical Calibration
Techmaster Electronics provides ISO/IEC 17025:2017 accredited calibration of analytical and process chemistry instruments for pharmaceutical, semiconductor, water-treatment, oil-and-gas, food-and-beverage, and environmental customers. From Mettler-Toledo, Thermo Orion, and Hach pH and conductivity systems to Industrial Scientific and RAE portable gas monitors, GE Sievers TOC analyzers, and certified buffer / conductivity solutions, our ANAB-accredited chemists deliver NIST-traceable certificates with full uncertainty budgets across the United States.
Equipment We Calibrate
Our biomedical calibration capabilities cover the most widely used IEC 60601-2-X compliant patient simulators, electrical safety analyzers, and clinical engineering test equipment. Each unit is calibrated against NIST-traceable standards with full uncertainty reporting included.
pH Meters & Ion-Selective Electrodes
Mettler-Toledo SevenExcellence, Thermo Orion Star A, Hach HQ-series, and Hanna HI-series — benchtop and portable pH, ORP, dissolved-oxygen, and ISE meters with NIST-traceable buffer verification from pH 0 – 14.
Conductivity / TDS Meters & Probes
Mettler-Toledo InLab, Thermo Orion 4-Star, Hach sensION, Hanna EC, and Endress+Hauser conductivity / TDS / resistivity analyzers — USP pharma water, semi UPW, and process-loop chemistry.
Gas Detectors & Portable Gas Analyzers
Industrial Scientific MX6 / Ventis Pro, RAE Systems MultiRAE / QRAE, Honeywell BW Max XT II, MSA Altair 4XR — bump-test and full span calibration with NIST-traceable cylinder gases (LEL, H2S, CO, O2, VOC).
TOC Analyzers & Titrators
GE Sievers M9 / 500RL, Shimadzu TOC-L, Mettler-Toledo Titrator V20 / G20, and Metrohm 916 / 905 — TOC, KF moisture, and acid-base titration calibration for EP 2.2.44 and ISO 8245 compliance.
Also calibrated: Refractometers · Spectrophotometers · Turbidity Meters · Density / Specific-Gravity Meters · Karl Fischer Coulometers · Refractive-Index Standards · Buffer & Conductivity Standards · Gas-Cylinder Reference Standards · Hand-Held Hydrometers · Colorimeters
Industries We Serve
Analytical-chemistry traceability for the regulated industries where pH, conductivity, gas concentration, and chemical-purity accuracy drive product release, worker safety, and environmental compliance.
Pharmaceutical & Biotech
USP water-system conductivity, drug-release pH, bioreactor DO probes, and GMP buffer-standard verification for FDA-regulated drug-product release.
Oil & Gas / Petrochemical
Refinery sulfur analyzers, custody-transfer pH, BTU calorimeters, H2S / CO portable monitors, and API-MPMS traceable process-chemistry instruments.
Water Treatment & Wastewater
EPA-method pH, chlorine residual, dissolved-oxygen, turbidity, and conductivity for municipal water, industrial discharge, and EPA NPDES reporting.
Semiconductor Wet-Etch & CMP
Ultra-pure-water resistivity (18.2 MΩ·cm), wet-bench HF / KOH bath chemistry, CMP slurry pH, and SEMI F-spec process-chemistry monitors.
Food & Beverage
Brewery pH and dissolved-CO2, dairy conductivity, juice Brix and acidity, and HACCP / FSMA chemistry monitoring for processing-line release.
Environmental Monitoring
Continuous emissions monitors (CEMS), EPA Method 25 VOC analyzers, soil & groundwater pH / conductivity, and laboratory titration QC.
Mining & Minerals Processing
Assay-lab pH and ORP, flotation-circuit chemistry, leach-tank pH controllers, and gold/copper / lithium concentrate analytical instruments.
Hazmat & Safety
Confined-space LEL / O2 / H2S / CO monitors, bump-test stations, hazmat photoionization detectors (PIDs), and fire-service air-quality test gear.
Three Levels of Calibration
Every Techmaster calibration includes a calibration sticker on the instrument. Choose the documentation level that matches your audit, regulatory, or quality program needs.
1
Traceable Calibration
Standard tier
- Calibration sticker on the unit
- Certificate of calibration
- NIST-traceable standards
2
Z540 Calibration
Plus measurement data
- Calibration sticker on the unit
- Certificate of calibration
- As-found / as-left data report
- ANSI/NCSL Z540-1 compliance
Most Rigorous
3
ISO/IEC 17025 Accredited
Audit-ready accreditation
- Calibration sticker on the unit
- Certificate of calibration
- As-found / as-left data report
- Measurement uncertainties report
- ANAB Cert AC-1736 reference
Click here to learn more about our three calibration levels →
Our & Advantages
Why pharma, semiconductor, water-utility, food-and-beverage, and oil-and-gas teams trust Techmaster for ISO/IEC 17025 chemical calibration since 1989.
ISO/IEC 17025:2017 Accredited
ANAB Cert AC-1736 — full uncertainty budgets, NIST-traceable standards, and audit-ready documentation on every report.
NIST-Traceable Reference Standards
pH 1.679 / 4.005 / 7.000 / 10.012 buffer standards, NIST SRM conductivity solutions, EPA-protocol calibration gases, and certified KF water standards — full uncertainty budgets on every accredited certificate.
Faster Than OEM
Standard 5-business-day turnaround with 1–2 day expedite available. Free local pickup in Silicon Valley, So-Cal, and Orlando.
Have an unusual analyte, custom buffer, or process-loop sensor? Talk with our chemistry team.
Our chemists handle USP pharma water testing, semi UPW resistivity, custom process-buffer match-checks, and certified gas-cylinder revalidation. Send us your analyte, range, and matrix for a same-day capability check.
Frequently Asked Questions
Common questions about ISO/IEC 17025 chemical and analytical-instrument calibration at Techmaster Electronics.
What chemical instruments does Techmaster calibrate?
We calibrate pH meters, ORP electrodes, conductivity / TDS / resistivity meters, dissolved-oxygen probes, portable gas detectors (LEL, H2S, CO, O2, VOC), TOC analyzers, automated titrators, refractometers, turbidity meters, spectrophotometers, density / specific-gravity meters, and Karl Fischer moisture analyzers.
Is chemical calibration accredited to ISO/IEC 17025:2017?
Yes. Techmaster Electronics is ANAB-accredited to ISO/IEC 17025:2017 (Certificate AC-1736). All chemistry calibrations are NIST-traceable: SRM buffers and conductivity standards from NIST and EPA-protocol gas cylinders, with measurement uncertainties on every accredited certificate.
How often should pH meters, conductivity meters, and gas detectors be recalibrated?
pH and conductivity benchtop meters are typically calibrated annually (with daily user verification using bracketing buffers). Portable gas detectors require a bump-test before each use plus full span calibration every 6 months per OSHA / ISEA RP 12-2.3. TOC analyzers and titrators follow USP / ISO method-specific revalidation schedules.
Do you provide certified buffer solutions and reference standards?
Yes. We supply NIST-traceable pH buffers (1.679, 4.005, 7.000, 10.012, 12.45), conductivity standards (84 μS/cm – 100 mS/cm), EPA-protocol calibration gases (LEL, H2S, CO, O2, VOC), and Karl Fischer water standards. Each standard ships with a NIST-traceable certificate of analysis.
Where do you perform chemical calibration?
In-lab chemical and analytical-instrument calibration is performed at our Vista CA (corporate HQ), Santa Clara CA, Orlando FL, and San Antonio TX laboratories. Free local pickup and delivery is available in Silicon Valley, Southern California, and Orlando. On-site gas-detector calibration is available throughout the continental United States.
Ready to schedule your chemical calibration?
Send us your instrument list, analyte ranges, and tolerance requirements and we’ll respond within one business day with pricing, turnaround, and a shipping label or pickup window.
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