QiWei Platinum-Cobalt Chroma Meter Series (BSD-500, BSD-50, SD-2) Malaysia: In-Depth Engineering Application Analysis & Technical Specifications

In power plants, pure water facilities, water treatment works, municipal and industrial wastewater plants,beverage manufacturing, distilleries, pharmaceutical industries, environmental monitoring departments, and public health or hospital laboratories across Malaysia, water chroma (color intensity) is a vital physical parameter for assessing water purity, organic contamination levels, and compliance with drinking water standards (such as Ministry of Health / MOH guidelines). Traditional visual colorimetry is prone to subjective human error, ambient lighting variations, and turbidity interference. As a premier precision analytical and industrial technical partner rooted in Puchong, Selangor, MTM Precision Sdn. Bhd. supplies the QiWei Platinum-Cobalt Chroma Meter Series (BSD-500 Microcomputer Benchtop Platinum-Cobalt Chroma Meter, BSD-50 Precision Chroma Meter, and SD-2 Portable Chroma Meter)—engineered for high-precision water chroma measurement based on the platinum-cobalt standard colorimetric method (APHA-Pt/Co scale / Hazen units).

This article provides an in-depth engineering application analysis of the QiWei platinum-cobalt chroma meter series across four core operational pillars: platinum-cobalt standard colorimetric principle, 0–50 PCU vs. 0–500 PCU range tiering, benchtop microcomputer control vs. portable AC/DC architecture, and multi-industry regulatory compliance.

1. Platinum-Cobalt Standard Colorimetric Principle & PCU Units

Optoelectronic Colorimetry: The series utilizes an advanced optoelectronic colorimetric principle where a specialized light source passes through the liquid sample, measuring light absorbance and converting it directly into standard platinum-cobalt color units (PCU / Hazen degrees), completely eliminating subjective visual bias.
Standardized Calibration: Calibrated strictly against certified platinum-cobalt standard reference solutions using "PCU" (Platinum-Cobalt Units) as the measurement scale, ensuring seamless correlation with wet-chemistry laboratory standards.

2. Range Tiering: BSD-50 (0–50 PCU) vs. BSD-500 & SD-2 (0–500 PCU)

To accommodate diverse water quality monitoring requirements—from high-purity drinking water to heavily colored industrial effluents:

BSD-50 (0 – 50 PCU Precision Chroma Meter): Tailored for low-chroma water samples such as potable drinking water, purified water, groundwater, and high-quality surface water. Features a fine display precision of 0.1 PCU, capturing minute color shifts effectively.
BSD-500 & SD-2 (0 – 500 PCU Wide-Range Meters): Engineered for higher-chroma applications including industrial wastewater, textile dyeing effluent, pulp and paper black liquor, chemical process streams, and fermentation broths, ensuring rigorous regulatory compliance.

3. Benchtop Microcomputer vs. Portable AC/DC Dual-Use Architecture

BSD-500 Microcomputer Benchtop Chroma Meter: Built with a robust benchtop microcomputer architecture and an optimized optical chamber, designed for high-throughput batch testing in municipal and industrial water testing laboratories (Powered by AC 220V / 50Hz).
BSD-50 & SD-2 Portable Chroma Meters: Designed for both fixed laboratory analysis and mobile field inspections. Support AC 220V / 50Hz mains power alongside 1.5V × 5 AA alkaline dry batteries (AC/DC dual use) with an automatic shutdown feature, enabling environmental enforcement officers and plant engineers to conduct on-site water quality audits effortlessly.

4. Official Technical Specifications & Performance Matrix

Technical Parameter	BSD-500 (Microcomputer Benchtop)	BSD-50 (Precision Benchtop/Portable)	SD-2 (Portable Chroma Meter)
Measurement Principle	Platinum-cobalt standard colorimetric method	Platinum-cobalt standard colorimetric method	Platinum-cobalt standard colorimetric method
Volume Range	0 – 500 PCU	0 – 50 PCU	0 – 500 PCU
Basic Error	±5% F.S.	±5% F.S.	±5% F.S.
Display Precision	0.1 PCU	0.1 PCU	0.1 PCU
Zero Drift	±1 PCU	±1 PCU	±1 PCU
Repeatability (Restore)	≤ 3%	≤ 3%	≤ 3%
Power Supply	AC 220V / 50Hz	1.5V × 5 AA alkaline dry batteries / AC 220V / DC 7.5V power adapter (AC/DC dual use with auto-shutdown)	1.5V × 5 AA alkaline dry batteries / AC 220V / DC 7.5V power adapter (AC/DC dual use with auto-shutdown)

5. Localized Professional Support: MTM Precision's Commitment

Equipping your water authority, environmental testing laboratory, or industrial manufacturing facility with the appropriate platinum-cobalt chroma meter ensures strict adherence to national and industrial discharge standards. As an authorized partner in Malaysia, MTM Precision Sdn. Bhd. provides comprehensive technical consultation, instrument calibration, and after-sales support from our Puchong showroom and service center, backed by:

Water Analysis Instrument Consulting: Expert guidance to match 0–50 PCU (BSD-50) or 0–500 PCU (BSD-500 and SD-2) meters to your specific testing requirements.
Local Service & Technical Support: Dedicated technical assistance, calibration verification, and spare parts supply right here in Selangor.