Determination of routine indicators for drinking water

Detection Target

Determination of routine indicators for drinking water

Overview

Routine indicators reflect the basic quality of drinking water and have a high detection rate, making them mandatory parameters for water quality monitoring in all regions. These include 4 microbiological indicators, 15 toxicological indicators, 17 sensory and general chemical indicators, 4 disinfectant indicators, and 2 radioactive indicators. Health departments and water supply companies focus on monitoring these routine indicators of drinking water. 

1．HKL-1700 Vis Spectrophotometer for drinking water quality indicator

Test Indicators 

1) Disinfectant Indicators: Residual chlorine, Chloramine, Ozone, Chlorine dioxide.

2) Toxicological Indicators: Arsenic (As), Hexavalent chromium (Cr⁶⁺), Cyanide (CN^-), Formaldehyde (HCHO).

3) General Chemical Indicators: Volatile phenols, Anionic synthetic detergents.

Features

1) Wide Wavelength Range: Meets the requirements of various fields for wavelength coverage.

2) Fully Automated Design: Achieves the simplest measurement method.

3) Large-scale integrated circuit design greatly enhances system scalability and reliability.

4) High-Performance Optical Design: Utilizes imported light sources and receivers to ensure high performance and reliability.

5) Rich Measurement Methods: Features various measurement modes such as wavelength scanning, time scanning, multi-wavelength determination, multi-order derivative determination (optional), dual-wavelength, triple-wavelength (optional), and DNA/protein measurement (optional), meeting diverse needs. Results can be displayed directly on a 6-inch large screen.

6) Flexible Accessory Options: Optional accessories include single-cell holder, manual four-cell holder, manual eight-cell holder, automatic eight-cell holder, glass holder, test tube stand, and cuvettes of different specifications (1cm, 5cm, and 10cm).

7) Measurement data can be output via a printer and is equipped with a USB interface.

8) Measurement parameters and data can be saved even after power-off for user convenience.

9) More precise and flexible measurement requirements, such as spectral scanning, can be achieved through PC software.

Technical Parameters

1) Wavelength Range: 190–1100 nm

2) Spectral Bandwidth: 1.8 nm

3) Wavelength Accuracy: ±0.3 nm

4) Wavelength Reproducibility: ≤0.1 nm

5) Transmittance Accuracy: ±0.3% τ (0–100% τ), ±0.002 A (0–0.5 A), ±0.003 A (0.5–1 A)

6) Transmittance Reproducibility: ±0.15% τ (0–100% τ), ±0.001 A (0–0.5 A), ±0.0015 A (0.5–1 A)

7) Stray Light: ≤0.03% τ (220 nm NaI, 340 nm NaNO₂)

8) Stability: 0.0005 A/h (after warm-up at 500 nm)

9) Photometric Modes: Transmittance, Absorbance, Concentration, Energy

10) Wavelength Adjustment: Automatic

11) Photometric Range: -4–4 A

12) Display: 6-inch high-brightness LCD screen

13) Detector: Imported silicon photodiode

14) Light Sources: Imported tungsten lamp, imported deuterium lamp

15) Power Supply: AC 220 V/50 Hz or 110 V/60 Hz

16) Power Consumption: 120 W

17) Dimensions: 560 × 450 × 230 mm

18) Net Weight: 28 kg

Configuration

2．HKL-15586 AAS for metal elements in Drinking water

Test Indicators

1) Flame Atomic Absorption (FAA): Fe, Mn, Cu, Zn

2) Flame Atomic Absorption (with Hydride Generator): Se

3) Graphite Furnace Atomic Absorption (GFAA): Cd, Pb, Al

Technical Parameters

1) Flame Atomizer

(1) Burner: Full titanium burner, compatible with 50mm or 100mm universal burner.

(2) Nebulization Chamber: Polymer anti-corrosion explosion-proof Nebulization chamber.

(3) Nebulizer: High-efficiency glass nebulizer (customizable).

(4) Ignition Method: Microcomputer-controlled automatic ignition.

(5) Gas Control: Japanese imported mass flow meter, fully automated microcomputer control system.

(6) Characteristic Concentration (Cu): ＜0.015 μg/ml/1%

(7) Detection Limit (Cu): ＜0.002 μg/ml

(8) Precision (Cu): ＜0.5%

(9) Piping Module: Sealed full stainless steel piping inside the machine, lifetime leak-free replacement, avoids plastic pipe aging.

(10) Safety Features: Gas leakage alarm, anti-flashback automatic protection, and automatic power-off in case of abnormalities.

2) Graphite Furnace Atomizer

(1) Heating Mode: Longitudinal heating

(2) Temperature Control Method: Longitudinal optical temperature monitoring for graphite tube inner wall temperature.

(3) Temperature Control Range: Ambient temperature to 3000°C

(4) Programmed Temperature Control: Fully automated 20-step temperature programming; In-situ enrichment up to 20 times.

(5) Characteristic Mass (Cd): 0.4×10^-12g

(6) Detection Limit (Cd): 0.4×10^-12g

(7) Precision (Cd): ≤2% (automatic sampling), ≤3% (manual sampling)

(8) Cooling Water System: Optional water circulation unit

(9) Safety: Graphite tube failure alarm, Water flow and air pressure monitoring, Over-temperature protection for cooling water

3) Automatic Sampler

(1) Sample Tray: 150 positions

(2) Injection Volume: 0.01~100 μl

(3) Minimum Volume: 0.01 μl

(4) Injection Volume Repeatability: 1%

(5) Repeated Injections: Up to 99 times

(6) Cleaning Container Volume: 500 ml

4) Data Processing

(1) Measurement Modes: Flame mode, Hydride Generation mode, Graphite Furnace mode.

(2) Concentration Calculation Methods: Standard Curve Method (1st to 3rd), Standard Addition Method.

(3) Replicate Measurements: 1-99 times, calculation of mean value, standard deviation, and relative standard deviation.

(4) Result Output: Parameter printing, Data report printing, Graphical output printing, Export capability to WORD/EXCEL formats. 

3．Gas Chromatography

Test Indicators

Trichloromethane (Chloroform), Carbon Tetrachloride

Apparatus

Gas Chromatograph (GC)

4．Ion Chromatography

Test Indicators

1) Inorganic Non-Metals: Soluble fluorides, chlorides, nitrates, and sulfates

2) Disinfection Byproducts: Chlorites, chlorates, bromates (including trace levels)

Apparatus

Ion Chromatograph (IC)

5．Mercury Analyzer

Test Indicators

Mercury (Hg)

Apparatus

Mercury analyzer

6．Potentiometric Titrator

Test Indicators

1) PH Value: Acid-base titration

2) Total Hardness: Complexometric titration

3) Oxygen Demand: Potassium permanganate method

Apparatus

Potentiometric titrator with corresponding measurement modules 

7．Other Equipment