High Precision Analyzer

The Texas Commission on Environmental Quality (TCEQ) Monitoring Division is requesting bids on one unit of a hydrogen sulfide cavity ringdown spectrometer (CRDS) for real-time air monitoring, RFB 582-26-15573, with bids due June 10, 2026, at 2:00 p.m. CST. Questions are due June 3, 2026, at 12:00 p.m. CST.

The CRDS must measure hydrogen sulfide with a guaranteed range of 0–20 parts per million (ppm) at specified precision, operational range of 0–300 ppm, and lower detection limit of 3 parts per billion (ppb). Methane measurement must cover 0–3 ppm guaranteed range and 0–20 ppm operational range. The instrument must achieve response time of 5 seconds or less, operate within 10–35 degrees Celsius, and maintain drift tolerances of less than 3 ppb over 24 hours for hydrogen sulfide and less than 2 ppb for methane. Physical dimensions must not exceed 7 inches height by 17 inches width by 17.5 inches depth to fit within the mobile monitoring van. The system must feature Swagelok inlet/outlet fittings and multiple data output options including RS232, analog, Ethernet, and USB connectivity. Standard electrical power of 100–240 volts AC at 47–63 Hz with auto-sensing capability is required. The equipment will support the Mobile Monitoring Team's compliance monitoring of hydrogen sulfide emissions.

Delivery is to the TCEQ facility at 12100 Park 35 Circle, Building B, Austin, Texas 78753. Bidders must hold a valid Federal Employer Identification Number and DUNS number prior to award. All bids must be manually signed and comply with Texas state procurement law and TCEQ terms and conditions, including certifications on non-boycott of Israel, exclusion from Iran and Sudan sanctions lists, and Texas bidder status if applicable. Pricing must be submitted as firm quotes for thirty days following bid opening, quoted F.O.B. destination with freight prepaid. Technical clarifications may be directed to Trenton Davis at 512-239-0356 or trenton.davis@tceq.texas.gov.