Precision Multi-Ion Water Quality Analysis in Malaysia: Exploring the QiWei PXS & DWS-51 Ion Concentration Meter Series

Monitoring specific dissolved ions in aqueous solutions is vital across power plants, microelectronics manufacturing, petrochemical processing, environmental water surveillance, and academic research laboratories in Malaysia. Unlike general conductivity or total dissolved solids (TDS) meters that only indicate overall ionic strength, ion-selective concentration meters isolate and quantify exact individual ions—enabling engineers and chemists to pinpoint trace contaminants, control chemical dosing, and verify ultrapure water quality with precision.

The QiWei PXS Series and DWS-51 Ion Concentration Meters represent a comprehensive lineup of dedicated benchtop electrochemical analyzers engineered to measure a wide spectrum of cations, anions, and dissolved gases across trace-level high-purity water, natural surface water, and industrial drainage streams.

Why Dedicated Ion Concentration Meters Are Essential

In thermal power stations and high-pressure steam systems, trace levels of sodium, chloride, or fluoride ions in boiler feed water and condensate can accelerate turbine blade corrosion and stress cracking. Similarly, in semiconductor fabrication, petrochemical refining, and wastewater compliance monitoring, detecting heavy metals (such as copper, iron, and cadmium) or nutrients (such as nitrate, potassium, and ammonia) at microgram-per-liter (µg/L) levels is critical.

By pairing specialized ion-selective electrodes with dedicated microcomputer-controlled benchtop meters, the QiWei PXS/DWS series eliminates tedious wet-chemistry titrations and provides fast, direct concentration or activity readouts across wide dynamic ranges.

Complete Lineup of QiWei Ion Concentration Meter Models

QiWei offers sixteen specialized models tailored to target specific ions and water chemistry parameters:

1. High-Purity Water & Boiler Monitoring Ions

DWS-51 Sodium Ion Concentration Meter: Essential for power plant steam, condensate, and demineralized boiler water monitoring (Measurement Range: 0.23 mg/L to 23 g/L).
PXS-CL Chloride Ion Concentration Meter: Critical for corrosion prevention in cooling loops, concrete testing, and industrial water systems (Measurement Range: 0.35 µg/L to 35.5 g/L).
PXS-F Fluoride Ion Concentration Meter: Designed for trace fluoride detection in power plant water,microelectronics, and municipal water supplies (Measurement Range: 0.19 µg/L to 19 g/L).

2. Environmental, Agricultural & Nutrient Ions

PXS-NO3 Nitrate Ion Concentration Meter: Used for surface water, groundwater, fertilizer runoff, and wastewater effluent analysis (Measurement Range: 0.19 µg/L to 19 g/L).
PXS-K Potassium Ion Concentration Meter: Ideal for soil extracts, fertigation solutions, clinical fluids,and water quality testing (Measurement Range: 0.19 µg/L to 19 g/L).
PXS-Ga Calcium Ion Concentration Meter: Quantifies water hardness and calcium ion activity in industrial and natural water systems (Measurement Range: 400 µg/L to 4 g/L).
PXS-NH3 Ammonia / Ammonium Ion Concentration Meter: Key parameter for aquaculture, municipal sewage treatment, and environmental discharge compliance.

3. Heavy Metals & Trace Industrial Elements

PXS-CU Copper Ion Concentration Meter: Monitors electroplating baths, mining effluent, and corrosion byproducts in piping networks (Measurement Range: 6.35 µg/L to 63.5 g/L).
PXS-Fe Iron Ion Concentration Meter: Tracks dissolved iron in groundwater, boiler systems, and industrial process streams (Measurement Range: 0.14 mg/L to 0.56 g/L).
PXS-Cd Cadmium Ion Concentration Meter: High-sensitivity heavy metal detection for environmental protection and industrial wastewater monitoring (Measurement Range: 0.19 µg/L to 19 g/L).

4. Carbonates, Dissolved Gases & Specialized Halogens

PXS-CO2 Carbon Dioxide Concentration Meter: Measures dissolved CO2 levels in beverage production, aquaculture, and boiler feed systems (Measurement Range: 1.75 mg/L to 0.44 g/L).
PXS-HCO3 Bicarbonate Concentration Meter: Evaluates alkalinity and buffering capacity in natural and industrial waters (Measurement Range: 2 mg/L to 0.6 g/L).
PXS-HCO3-1 Carbonate Densitometer: Dedicated analyzer for carbonate ion concentration determination.
PXS-I Iodized Ion Enrichment Meter: Quantifies iodide/iodine concentration in food processing,pharmaceuticals, and chemical testing (Measurement Range: 12.7 µg/L to 1.27 g/L).
PXS-H Hydrogen Ion Concentration Meter: High-precision hydrogen ion activity / pH measurement.
PXS-FP Fluoroborate Enrichment Meter: Specialized industrial analyzer for fluoroborate bath and chemical process monitoring.

Reference Measurement Ranges Summary Table

Model	Target Parameter	Reference Measurement Range
QiWei DWS-51	Sodium Ion (Na+)	0.23 mg/L – 23 g/L
QiWei PXS-F	Fluoride Ion (F-)	0.19 µg/L – 19 g/L
QiWei PXS-CL	Chloride Ion (Cl-)	0.35 µg/L – 35.5 g/L
QiWei PXS-NO3	Nitrate Ion (NO3-)	0.19 µg/L – 19 g/L
QiWei PXS-K	Potassium Ion (K+)	0.19 µg/L – 19 g/L
QiWei PXS-Ga	Calcium Ion (Ca2+)	400 µg/L – 4 g/L
QiWei PXS-CO2	Carbon Dioxide (CO2)	1.75 mg/L – 0.44 g/L
QiWei PXS-I	Iodine / Iodide Ion (I-)	12.7 µg/L – 1.27 g/L
QiWei PXS-CU	Copper Ion (Cu2+)	6.35 µg/L – 63.5 g/L
QiWei PXS-HCO3	Bicarbonate Ion (HCO3-)	2 mg/L – 0.6 g/L
QiWei PXS-Fe	Iron Ion (Fe)	0.14 mg/L – 0.56 g/L
QiWei PXS-Cd	Cadmium Ion (Cd2+)	0.19 µg/L – 19 g/L
QiWei PXS-H	Hydrogen Ion (H+)	Dedicated Hydrogen Ion Range
QiWei PXS-NH3	Ammonia / Ammonium (NH3)	Dedicated Ammonia Ion Range
QiWei PXS-HCO3-1	Carbonate Ion	Dedicated Carbonate Range
QiWei PXS-FP	Fluoroborate Ion	Dedicated Fluoroborate Range

Key Engineering & Operational Advantages

Broad Dynamic Sensitivity: Capable of measuring from trace microgram-per-liter (µg/L) levels in ultrapure water all the way up to gram-per-liter (g/L) concentrations in industrial process solutions.
Ergonomic Benchtop Form Factor: Compact housing with a clear digital display, intuitive membrane keypad, flexible electrode holder arm, and standard BNC / multi-pin rear electrode connectors for reliable signal transmission.
Versatile Industry Compatibility: Built to serve power generation plants, microelectronics fabs,petrochemical complexes, universities, scientific research institutes, and environmental testing laboratories.

Local Consultation & Technical Support in Malaysia

Selecting the right ion concentration meter and matching ion-selective electrode (ISE) depends on your target ion, expected concentration range, and sample matrix. Our team in Puchong, Selangor is ready to assist with model recommendations, electrode pairing, calibration standards, and quotations.

Contact MTM Precision

MTM Precision Sdn. Bhd.

Showroom & Service Centre

No. 29-1 & 29-2, Jalan Bandar 18,

Pusat Bandar Puchong,

47160 Puchong, Selangor, Malaysia

Website:

www.mtmpre.com

.my

Email: mtmpre@yahoo.com

WhatsApp: +6016-660 7346

Office Tel: +603-80807172