For determination of the chemical oxygen demand (ST-CSB
). The AQUALYTIC®
VARIO is suitable for waste-water analysis due to its 3 measuring ranges. The unit ensures operational safety and comfort.
The waste-water parameter CSB:
- User-friendly keypad.
- Suppression of chloride interference up to 1000 mg / l (LR and MR) and up to 10000 mg / l (HR).
- Waterproof as defined in IP68, 1 h at 0.1 m.
The chemical oxygen demand, ST-COD
-value (ST = small scale sealed tube), of a sample is determined by the dichromate method. The result is a reference value for the theoretical oxygen demand, that is the amount of oxygen consumed which is needed in a total chemical oxidation of the organic constituents present in the water.Setup AL200COD VARIO:
VARIO allows for precise water analyses with min. effort. After adding 2 ml of the sample to an AQUALYTIC® COD
VARIO tube test, the test is heated to 150 °C in a reactor for 2 h, cooled down and measured in a photometer afterwards.Items supplied with set-up:
Unit in plastic case, 4 batteries (AA), adapter for round vials Ø 16 mm, 2 sets of tube tests 0 to 150 mg / l, 0 to 1500 mg / l, thermoreactor AL125, vial stand, 2 syringes 1 and 2 ml, manual, warranty and certificate (COC).
|Measuring ranges:||0 to 150 mg / l, ± 3.5 %|
0 to 1500 mg / l, ± 3.5 %
0 to 15000 mg / l, ± 3.5 %
|Light sources:||2 long-term temperature compensating LED|
|Wavelength accuracy:||± 1 nm|
|Photometric accuracy:||3 % FS (T = 20 to 25 °C)|
|Photometric resolution:||0.01 A|
|Mains supply:||4 batteries (AA), capacity approx 53 h or 15000 measurements while continuous operation and switched off display illumination|
|Auto - OFF:||automatic shutdown of device|
|Display:||backlit LCD (at the push of a button)|
|Memory:||internal ring memory for 16 records|
|Interface:||IR interface for measurement data transfer to IRiM|
|Time:||real-time and date|
|Dimensions (L x W x H):||190 x 110 x 55 mm|
|Weight:||basic unit approx. 455 g (incl. batteries)|
|Ambient conditions:||temperature: 5 to 40 °C|
rel. humidity: 30 to 90 %