Determination of the chemical oxygen demand index

Highlights

• ST-COD sealed tubes ready for use
• Suppression of chloride interference up to 1000 mg/l (for not mercury-free tube tests only)
• 3 ranges:
  Low range: 0 – 150 mg/l, meets ISO 15705:2002
  Middle range: 0 – 1500 mg/l, meets ISO 15705:2002
  High range: 0 – 15000 mg/l

Description

AL250 COD Vario

With a measuring range from 0 to 15,000 mg/l O₂, the AQUALYTIC AL250COD VARIO photometer is suitable for waste water testing.

Two LEDs light sources with long-term stability (λ1 = 605 nm; λ2 = 430 nm, according to ISO 15705:2002), a waterproof sample chamber, a large digital display, and the user-friendly keypad ensure maximum operating reliability and convenience.

AL250 COD VARIO 4269250

Setup AL250COD VARIO

The AQUALYTIC AL250COD VARIO test setup allows highly sensitive and precise water testing with minimum effort. It measures the ST-COD concentration by photometric detection employing a linear relationship between absorbance and concentration.

After adding the sample to a AQUALYTIC COD VARIO tube test (LR, MR according to ISO 15705:2002), it is heated in the reactor and then analysed in the AL250COD vario photometer.

The COD-Setup comprises the AL250COD VARIO photometer, 25 tube tests for each of the two lower measuring ranges, a reactor for sample digestion, and a vial stand.

COD-Set-Up AL250 COD VARIO
complete with photometer, reactor AL125, 2 sets of 25 tubes each 0-150 mg/l and 0-1500 mg/l and tube stand
Order code 4269260

Waste water parameter COD

The chemical oxygen demand, ST-COD value, of water as determined by this dichromate method can be considered as an estimate of the theoretical oxygen demand, i.e. the amount of oxygen consumed in total chemical oxidation of the organic constituents present in the water.

Catalogue extract

The Cat­a­logue ex­tract for the AL250 COD with more in­for­ma­tion, tech­ni­cal data and order codes can be down­load­ed as a PDF »