Microtox, Deltatox & RPA cleaning and calibration service.
Certified cleaning, calibration, and performance verification for the Microtox Model 500, Deltatox I & II analyzers, and RPA I & II fluorimeters. With the factory-channel cleaning and calibration service for the M500 and Deltatox now discontinued, Rematek provides it directly — keeping your acute toxicity and fluorescence results accurate, compliant, and defensible.
Authorized Modern Water service representative for 30+ years — Fallbrook, CA
What's included in a Rematek cleaning & calibration
Every Microtox M500, Deltatox analyzer, and RPA fluorimeter is cleaned, calibrated, and verified by an authorized Modern Water service representative with three decades of hands-on experience on these instruments.
Optical & well cleaning
Thorough cleaning of the photometer optics, reagent and read wells, and temperature-control path to remove the drift sources that degrade acute toxicity readings.
Calibration & verification
Full calibration and performance verification of the measurement path so your light-output readings stay accurate, repeatable, and within standard-method tolerances.
Repair & parts as needed
Any faults found during cleaning and calibration are diagnosed and repaired, with replacement parts to keep the instrument in service long after standard support windows close.
Flat-rate certified cleaning & calibration
Transparent per-instrument pricing for the full certified service — no factory-channel markup.
Fully certified cleaning, calibration, and performance verification of your Microtox Model 500 analyzer.
Includes certification documentation and most required repairs. Any parts required are additional.
Fully certified cleaning, calibration, and performance verification of your Microtox LX analyzer.
Includes certification documentation and most required repairs. Any parts required are additional.
Fully certified cleaning, calibration, and performance verification of your portable Microtox FX analyzer.
Includes certification documentation and most required repairs. Any parts required are additional.
Fully certified cleaning, calibration, and performance verification of your portable Deltatox I or Deltatox II analyzer.
Includes certification documentation and most required repairs. Any parts required are additional.
Fully certified cleaning, calibration, and performance verification of your RPA I or RPA II fluorimeter.
Includes certification documentation and most required repairs. Any parts required are additional.
- Turnaround
- 72 hours — fast turnaround is a priority, barring unforeseen issues, which are rare.
- Return shipping
- Your instrument is returned on Rematek's FedEx account, with the shipping cost added to your invoice — unless you'd prefer it returned via your own FedEx account or shipping method.
The direct cleaning & calibration service was discontinued.
The factory-channel cleaning and calibration service that labs relied on for the Microtox Model 500 and Deltatox analyzers — sold as a fixed-price service line item — has been discontinued. With thousands of these instruments still in daily service, that leaves a real gap for facilities that need certified maintenance to stay accurate and compliant. The same authorized-service gap applies to the newer Microtox LX and FX analyzers and the RPA I & II fluorimeters — Rematek cleans and calibrates the full lineup directly. If JJS Tech previously handled your service, see how Rematek’s flat rates compare.
- Service
- Cleaning & calibration — Modern Water Microtox M500 / Deltatox
- Formerly sold by
- JJS Tech (item #555934)
- Former list price
- $1,912.50
- Status
- Discontinued
Modern Water manufactures the analyzers; JJS Tech was the third-party distributor that sold this cleaning & calibration service. JJS Tech's listing for item #555934 is now marked discontinued.
Why Rematek is the direct alternative
Authorized service representative
Rematek is an authorized Modern Water service representative — not a generic third-party repair shop — with 30+ years on these exact analyzers.
The same work, done directly
Full cleaning, calibration, and performance verification of the M500 and Deltatox measurement path, performed and documented in-house.
In- and out-of-warranty units
Older instruments that the original channel no longer supports are still serviced and kept accurate, so you avoid premature replacement.
Cleaning & calibration ships with a Certification of Quality.
A certified cleaning and calibration comes back with a signed Certification of Quality — your formal report and proof of service. It declares the unit meets or exceeds its original design and test parameters, and documents the standards and functional checks behind that result. A repair-only job is different: if you simply need the instrument diagnosed and running again, that's exactly what we do — no calibration certificate is issued.
- Calibration traceability
- NIST-traceable standards
- Electromagnetic compatibility
- EMC Directive 89/336/EEC
- Electrical safety
- Low Voltage Directive 73/23/EEC
All measuring instruments are calibrated by industrially accepted methods with accuracies traceable to NIST. Hard copies of calibration and test records are kept perpetually and are available on request.
What's tested and documented
- Cool block temperature
- Reagent block temperature
- Computer communication
- Mode differentiation
- Photomultiplier light response
- Read and set functions
- Full functionality
Calibration that keeps your results defensible
The Microtox Model 500 and Deltatox analyzers run internationally recognized toxicity test methods. Routine cleaning and calibration keep your instrument inside the tolerances these standards require — so your data holds up to audit and permit review.
Luminescent bacteria test
The Microtox M500 supports ISO 11348-3 for the determination of inhibitory effect of water samples on the light emission of Vibrio fischeri.
German standard method
Calibrated instruments stay within the optical and temperature tolerances the DIN 38412 luminescent bacteria procedure depends on.
Toxicity screening
Supports the ASTM D5660 method for assessing the relative toxicity of industrial effluent and process waters.
Whole Effluent Toxicity
Accurate calibration underpins Whole Effluent Toxicity screening used to support NPDES discharge-permit compliance in the US.
Need repair, not just calibration?
This page covers cleaning & calibration. For the full range of servicing and repair across every Microtox, Deltatox, and RPA instrument — including hourly repair — see the service & repair overview.
Why authorized calibration matters
Generalist refurbishers like York Scientific resell hardware and offer third-party repair, but only a factory-authorized Modern Water representative provides authorized calibration. See how the two compare.
Cleaning & calibration questions
- Where can I get Microtox M500 cleaning and calibration now that the service was discontinued?
- Rematek, LLC performs cleaning and calibration for the Microtox Model 500, Deltatox analyzers, and RPA I & II fluorimeters. The factory-channel service for the M500 and Deltatox previously sold as Item #555934 has been discontinued, and Rematek — an authorized Modern Water service representative for over 30 years — provides this service directly from Fallbrook, California.
- What was Item #555934?
- Item #555934 was the Modern Water Cleaning and Calibration service for the Microtox M500 or Deltatox, previously sold by third-party distributors at a list price of $1,912.50. It is now listed as discontinued. Rematek offers an equivalent certified cleaning and calibration service.
- Does calibration keep my analyzer compliant with ISO and ASTM methods?
- Yes. The Microtox M500 runs standard methods including ISO 11348-3, DIN 38412, and ASTM D5660. Routine cleaning and calibration keep the instrument within the optical and temperature tolerances those methods require, so your toxicity results stay accurate and defensible.
- Do you clean and calibrate out-of-warranty Microtox, Deltatox, and RPA units?
- Yes. Rematek services in- and out-of-warranty Microtox Model 500 and Deltatox analyzers and RPA I & II fluorimeters, including older instruments the original manufacturer channel no longer supports.
- How do I request cleaning and calibration for my instrument?
- Contact Rematek with your instrument model and any symptoms you're seeing. Rematek assesses the unit and the work it needs, then confirms scope before the cleaning and calibration begins.
“Modern Water is pleased to announce it has appointed Rematek, LLC as an authorized service representative for its Microtox M500 and Deltatox acute toxicity analyzers.”
Rematek is a contract manufacturing specialist for environmental science technologies in Fallbrook, CA. Mark Woodward, the owner and operator of Rematek, has been an authorized service representative for over 30 years.
Ready to get your analyzer serviced?
Tell us what you're running and what it needs. Rematek will get it back to peak precision.
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