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[TEST] CS TEST Organics

For the determination of dissolved organic matter (DOM) in seawater, as well as freshwater



Specification
No. of tests: 50
Range: 0 - 4 mmol / l
Accuracy: +/- 0,04 mmol
Composition
1x ORG1 - buffer - 50 ml
1x ORG2 - titrant - 50 ml
1x ORG3 - indicator - 5 ml with dropper
1x ORG 4 - back titrant - 50 ml
Storage
Store in a dark place at room temperature.
Safety
Keep out of reach of children!
Further important information can be found in operating instructions.
Warning
In case of syringes wear use the CS Lab Set CONSUMABLES.
Customs Tariff Code
3824.9097 - 99


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CS TEST Organics
Manual
[TEST] CS LAB SET Testing
[TEST] CS LAB SET Consumables
 

CS TEST Organics

 
ORG

Test is intended for the determination of dissolved organic matter (DOM) in seawater, as well as freshwater.

It is based on the reaction of sample with strong oxidizing agent, reacting not only with DOM but in less extent also with POM (Particulate Organic Matter) and some trace elements. Thus, formally we are talking about the test kit for determination of reducing matter in aqueous solutions. The results are expressed as the consumption of oxidizing agent in millimols per 1 litre of tested water.

Since the test kit is intended for general reefkeeping public, it was necessary to avoid the use of any concentrated acids and aggressive catalysers in test agents as well as a need of sample solution heating before titration. Because the oxidation of high-molecular organic compounds is relatively slow process, the only chance was to extend the reaction time of oxidizing agent with the sample without the access of air – in case of CS TEST Organics on 24 hours in closed titration flask or titration container respectively.

 

Package Content:

 
  • 1x ORG1 – buffer – 50 ml
  • 1x ORG2 – titrant – 50 ml
  • 1x ORG3 – indicator – 10 ml with dropper
  • 1x ORG 4 – back titrant – 50 ml
  • 4x Plastic syringe 1 ml
  • 3x Pipette tips
  • 1x Plastic titration container
  • 2x Latex gloves
  • 1x Operating Instructions
ORG
 

Important Notices

 
  1. Never use this test directly after application of any additives, pollution removers and/or food. Make any measures affecting the water chemistry after testing
  2. Carefully read up the safety measures and other instructions in user’s manual
  3. Observe 24-hours reaction time of the agent with then sample +/- 60 minutes
 

Areas of use:

 

1 – Running Tank Maintenance

Test results above limit = high concentration of primarily organic nutrients. Denotes the risk or proves the reason of unwanted algae and cyanos growth. Regular DOM testing allows to make all necessary measures, avoiding further DOM concentration increase and consequently the increase of nitrates, phosphates and other unwanted matter level:

  • Lowering of food dosage
  • Lowering of DOM-based additives dosage

If test results are not above limit and yet the algae and cyanos grow in the tank, the problem is most probably in high concentration of inorganic nutrients – trace elements for instance.

2 – Use of active carbon

Used for determination of active carbon quality or its proper way of application (amount, time), perhaps even for the comparison of various brands. Start the 1st test just before the application of carbon, the 2nd one ca. 4 hours after. However the DOM has to be present in water in measurable concentration before the 1st test – otherwise any probing makes no sense.

3 – Skimming

With certain limitations CS TEST Organics is also usable when checking the efficiency or settings of skimmers. Skimming removes from water not only DOM, but also POM (particulate organic matter), which is however detectable by the test only partially. Nevertheless, the results of testing – treated as a good estimation – are well usable in practice.

Start the 1st test just before the change of settings or exchange of skimmer, the 2nd one ca. 15 – 20 hours after. As in the previous case, the DOM has to be present in water in measurable concentration before the 1st test.

 

Specification

 

Parameters

Colour Change
No. of Tests 50
ORG1
ORG2
Range 0 - 4 mmol / l
Accuracy +/- 0,04 mmol
 
 
CS TESTs
 

Document A_08_02 - XI/2010 - F. Floder

 
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