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** Now available: PoolLab 1.0**

Alkalinity-m / Acidity KS4,3
Total Hardness
Calcium Hardness
Cyanuric Acid
Hardness Yes/No

The colour transition in the sample occurs by adding tablets to achieve a colour change.



In this chapter, we define “Special Processes” as methods which are not, or are hardly, offered through classical measurement methods – such as Pooltesters – that is, a special process to determine the values. For example, the Pool-i.d tablet count process (which causes the colour in the sampled water to abruptly change at a point when reagent tablets are continuously added) functions with reagent tablets and not with liquid reagents which can falsify results when different drop sizes are created depending on the pressure applied to the bottle.



Special Processes

The Tablet Count Process.

The tablet count process forces the sample water to change colour based on the number of tablets added. For example (see image left) from yellow to red (Alkalinity-m / Acidity KS4,3).
The value can easily be determined on a conversion table based on the number of tablets it takes for the colour to change.
The number of tablets to be added x 0.4 minus 0.2 provides the result depicted on the left, for example of mmol/l KS4,3).
By changing the amount of fluid sampled, the measuring span can be changed.
Each Special Process Kit comes with a 0-100 ml sampling container, a stirring rod a cleaning brush, and at least 100 reagent tablets.

Plungers up...
Measuring Opacity.

Measuring opacity is striking for its simplicity. This process is offered by Pool-i.d. so you can measure cyanuric acid. Too much cyanuric acid will limit the ability of the disinfectant (Chlorine) to kill off bacteria. determining this value is as important as determining chlorine values. In measuring opacity, a syringe-like device is filled with the sampled water and a Pool-i.d. reagent tablet is added. The sample becomes opaque. On the bottom end of the plunger inside the device is a black dot. Next to the dot there are a series of intake openings. The plunger is now moved up and down until the black dot is no longer visible. At this stage the value can be read from the scale that is placed on the outside of the device. By diluting the sample, wide measurement ranges can be achieved.

Distinguishing Features
The reagent tablets for the count process are delivered in a separate box that has the same colour and is made of the same material. It in turn is inserted into the side of the measuring vessel. As a result, it doesn’t take any effort to connect the different reagent tablet types with their different measurements to the box for the device.