Portable Digital TDS and pH meter Oman Muscat | UV Water Systems Oman

Every residential and commercial water treatment customer in Oman should have a portable TDS pen. It is the simplest, lowest-cost way to verify that a water treatment system — an RO filter, a softener, a whole-house filter — is doing what it was installed to do. A residential RO system producing 50 ppm TDS permeate from 600 ppm municipal feed water is performing correctly. The same RO system one month later producing 400 ppm — measurable in ten seconds with a handheld TDS pen — has a failed or fouled membrane that needs immediate attention. The portable digital TDS and pH testing pen supplied by UV Water Systems in Muscat combines TDS measurement (0–9990 ppm range) with pH measurement (0–14 range) in a single pocket-sized instrument — giving both the basic water quality parameters needed to monitor RO performance, softener operation, chemical dosing effectiveness, and general water quality across all water treatment system types used in Oman.

How TDS Pens Work and Why They Are Reliable

The TDS pen operates on the same principle as the panel mount conductivity monitor — it measures the electrical conductivity of the water through two metallic electrodes immersed in the water sample, then converts the conductivity reading to a TDS value using a calibration factor. The result appears on the digital display within a few seconds. The instrument’s accuracy is sufficient for field quality verification — it will reliably distinguish 50 ppm RO permeate from 500 ppm tap water, and 200 ppm acceptable permeate from 800 ppm indicating membrane failure. The pH electrode in the combination instrument operates on a different principle (electrochemical potential between a glass electrode and reference electrode in the sample), providing the pH value needed for chemical dosing system verification, softener effluent quality checks, and cooling water treatment monitoring.

Key Features and Benefits of Digital TDS and pH meter Oman Muscat

Combined TDS and pH in one pen: Two critical water quality parameters in a single pocket instrument — no need to carry two separate testers for field service visits, residential quality checks, and commercial site commissioning across Oman.
0–9990 ppm TDS range: Covers every water quality condition in Oman — from high-purity RO permeate (10–50 ppm) through Muscat municipal supply (500–1000 ppm typical) to Oman’s highest-TDS borehole water (5,000–8,000 ppm) — with automatic range switching for readability.
pH 0–14 measurement range: Full pH range for chemical water treatment monitoring — verifying acid dosing (target pH 6.5–7.0 for antiscalant effectiveness), caustic dosing (target pH 8.5–9.5 for corrosion inhibition), and checking RO permeate pH for drinking water quality verification to OS 8/2 Oman drinking water standard.
Pocket-sized for field service use: Compact pen format fits a shirt pocket or tool bag — UV Water Systems’ field technicians carry TDS pens on every service visit for immediate before/after comparison of RO system performance during filter changes, membrane replacements, and system commissioning.
Auto temperature compensation (ATC): Both TDS and pH readings are corrected for sample temperature — preventing misreadings caused by Oman’s ambient temperature variation across seasons (18°C winter to 35°C summer indoor ambient).

Technical Specifications of Digital TDS and pH meter Oman Muscat

TDS range: 0–9990 ppm
TDS accuracy: ±2% full scale
pH range: 0–14
pH accuracy: ±0.1 pH
Temperature compensation: Automatic (ATC)
Power: Battery (LR44 or equivalent)

Applications of Digital TDS and pH meter Oman Muscat

The portable TDS/pH pen is used by UV Water Systems’ field technicians across all Muscat service visits and is recommended to all residential RO customers for monthly self-monitoring of RO permeate quality. Supply and installation customers receive basic water testing training with every UV Water Systems RO system installation — call +968 9763 7786 to order a replacement pen or to book a system quality check.

Frequently Asked Questions

How do I use a TDS pen to check my home RO system? Dip the pen electrodes into a glass of RO permeate water (from the dedicated RO tap) and read the TDS value after 3–5 seconds. Compare to the feed water TDS (measured from the tap before the RO system). RO rejection percentage = (1 – permeate TDS / feed TDS) × 100. For a functioning membrane, rejection should be above 93–96%. If rejection has dropped below 85%, contact UV Water Systems for a membrane assessment.

How often should I calibrate the TDS/pH pen? TDS conductivity cells are factory calibrated and stable — check against a known calibration solution (1382 µS/cm standard) every 3–6 months. pH electrodes require more frequent calibration with pH 4.0 and pH 7.0 buffer solutions — monthly calibration is recommended for accurate pH readings, especially if the electrode has been used in heavily saline or acidic samples. UV Water Systems stocks calibration buffer solutions for pH and conductivity in Muscat.

UV Water Systems is an ISO 9001:2015 certified water treatment company based in Muscat, Sultanate of Oman, with 14+ years of experience. We supply, install, and service water treatment solutions for residential, commercial, and industrial clients across Oman. Call +968 9763 7786 or visit www.uvwater.biz.

Digital TDS and pH meter Oman Muscat

Water Quality Test

Portable Digital TDS and pH Testing Pen – UV Water Systems Oman