512-846-2893 [email protected] [email protected]

Water Quality Monitoring Equipment
Sales, Service, and Support

Specializing in Hydrolab®, YSI EXO®, In-Situ®, HydroTech®, OTT Hydromet®, and TRIOS® Systems

Browse Products Repair & Service
Best service
Best Service
1-year warranty on parts & labor
Reliable equipment
Reliable Equipment
Industry-leading instruments
Lowest price
Lowest Price
Guaranteed on all equipment
Water quality field monitoring
30+ Years of expertise

About HydroTech ZS

Leaders in Water Quality Equipment & Innovation

HydroTech is a leader in the innovation of new products and services that enable our customers to collect water quality data with ease and confidence.

Located in Round Rock, Texas, our facility is equipped with the most advanced technologies and testing equipment to minimize repair cost and maximize efficiency.

  • 1-year warranty on parts and labor — double the industry standard
  • Expert repair: Hydrolab®, YSI EXO®, In-Situ® & TriOS® equipment
  • In-house lab minimizes costs and maximizes turnaround speed
  • Free online calculators: O₂ solubility, pH buffer, conductivity, TDG
  • Custom cables, antifouling systems, and SDI-12 accessories
Our Repair Services

Equipment Catalog

Professional Water Quality Instruments

From compact multiprobes to UV nitrate sensors — sales, support, and factory-quality repair for every major platform.

Compact MS multiprobe

Multiprobes

Compact MS (CMS)

Up to 7 parameters: optical DO, conductivity, temperature, pH, ORP, depth, turbidity. 120,000-measurement memory.

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Compact DS multiprobe

Multiprobes

Compact DS (CDS)

Up to 10 parameters, 225 m depth, self-cleaning turbidity. Hydrolab® 6-pin or YSI® connector.

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Interactive Tool

Nitrate Probes

Nitrate Probe Configurator

Answer 6 guided steps — water type, parameters, path length, housing, and accessories — and get a complete NICO / OPUS part number list ready to print or submit.

Open Configurator →
YSI EXO accessories

EXO® Solutions

EXO® Accessories & Rebuild

Bluetooth adaptors, field cables, sensor crowns, port inserts, and EXO sensor rebuild with 1-year warranty.

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TriOS NICO nitrate sensor

Nitrate Sensors

TriOS NICO® & OPUS®

UV photometric nitrate sensors. NICO for freshwater NO₃; OPUS for full N & C spectrum analysis.

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NX10 handheld tablet

Displays & Handhelds

NX10 Universal Handheld

Rugged Windows tablet compatible with all HydroTech, Hydrolab® and YSI EXO® sondes. Built-in regulated power.

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LDM antifouling module

Antifouling

LDM Antifouling Module

Patented (US 7,437,248) anti-fouling system for any multiprobe. Eliminates micro & macro-fouling.

Learn more →

Need a repair quote or ready to order?

Talk to a specialist — we'll find the right solution at the best price.

Call 512-846-2893
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