The KDSR-303A is a fully automatic water-soluble acid tester (colorimetric method) built to GB/T7598-2008 standards. Controlled by a microprocessor, it automates heating, thermostatic control, shaking, sampling, testing, cleaning, and printing—enabling 1–3 samples to be tested in one run to save time and reduce labor. It features an 800×480 color touchscreen for intuitive operation, a thermal printer for clear reports, and water quality correction for accurate results. Optional wireless communication supports data exchange with upper computers, making it ideal for efficient oil quality testing in power systems.

• Fully automated testing: heating, thermostatic control, shaking, sampling, testing, cleaning, and printing
• Supports 1–3 samples per run for high efficiency
• 800×480 color touchscreen with clear prompts for easy operation
• Thermal printer for high-quality test reports
• Water quality correction function for improved accuracy
• Optional wireless communication for data exchange with upper computers
• Reciprocating shaking mode for consistent sample preparation

• Model: KDSR-303A
• Measurement range (pH): 3.6 ~ 7.0
• Minimum display unit (pH): 0.1
• Thermostatic accuracy: ±2°C
• Measurement error: ≤±0.1 pH, repeatability ≤0.1 pH
• Shaking mode: Reciprocating
• Operating temperature: 5 ~ 45°C
• Operating humidity: ≤85% RH
• Power supply: AC 220 V ±22 V, 50 Hz ±1 Hz