TRES-55609

An ISO 9001:2208 | ISO 14001:2008 | ISO 13485WHO:GMP Products | GLP Compliant Products

Weiber multi-function reactor is an ideal instrument for

performing multiple functions as ascertaining Chemical Oxygen

Demand, i.e. COD and TP / TN. COD is necessary to ascertain the

oxygen requirement of waste water prior to its release into the

environment, so that it can be monitored and controlled to avoid

harmful effects on the nature, human beings, etc.

Chemicals / Nutrients as Nitrogen and Phosphorous are vital

water quality parameter. Depending upon their chemical forms

they significantly directly or indirectly affect plant growth,

oxygen concentrations, water clarity, etc. Plants require these

chemicals to grow, reproduce and to keep away diseases. Natural

sources of N include fresh water, decomposing organic matter and

waste, extraction of nitrogen gas from some bacteria and blue

TN / TP analysis

algae. Man made sources are effluent from water treatment

plants, agricultural fertilizers, industrial wastes, livestock

wastes, etc.

Phosphorous exists in water in several forms; total phosphorous is

one of them. Decomposition of dead plants and animals adds to

TP in water. These can enter an estuary from water treatment

plants, sewage, soils, agricultural fields, etc. High P level is there

due to storms, or due to irrigational activities.

Due to atmospheric deposition the N and P pollutants from

manmade sources in the air fall on land or water bodies, thereby

contaminating them.

Total Nitrogen & Phosphorus Estimation

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Total Nitrogen & PhosphorusEstimation Reactor

Working Principle for TN:

Working Principle for TP:

An alkaline persulfate digestion converts all forms of nitrogen to nitrate.

Nitrate then reacts with chromotropic acid under strongly acidic

conditions to form a yellow complex with an absorbance maximum at

420 nm.

Phosphates are converted to orthophosphates by heating with acid and

persulfate. Orthophosphate reacts with molybdate in an acid medium to

produce a mixed phosphate/molybdate complex. Ascorbic acid then

reduces the complex, giving an intense molybdenum blue color. Test

results are measured at 610 nm.

• Transparent Protective Lid

• Auto Shutdown at End of Completion of the ProcedureFeat

ures

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Technical Specifications

• Temperature for: • COD - 165°C • TP / TN - 105°C

• Capacity : 24 vials of size 16 x 100 mm

• Warm up Time : 20 minutes

• Power Requirements : 220±22V, 50Hz, 300W

• Ambient Operating Temperature : 0 to 50 ?

• Temperature Stability : ±1?

• Accuracy : ±1?

• Timer : 1-1680 minutes

(31 hours) with

audible alarm

And feature of

being automatic

• Range Adjustment : 105-165±1?,

Shortcuts for

105? and 150?

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