Applications:
DTEA II® SR and DTEA II® SR Plus SC slow release tablets are designed for treating water in smallto medium-sized (<250 RT, <3,000 gal) cooling towers and other industrial water systems. DTEA II® is especially useful for treatment of high cycle and re-use water-supplied systems which are prone to fast deposit buildup.
The active ingredient in the DTEA II SR tablet is DTEA II, an organic deposit penetrant and dispersant as well as a yellow-metal corrosion inhibitor. This tablet is designed to reduce the “demand” and therefore the usage of scale and corrosion inhibitors, and biocide chemicals.
The active ingredients in the DTEA II SR Plus SC tablet are DTEA II plus added scale and corrosion inhibitors. This tablet may be suitable as a stand-alone deposit and corrosion control program, depending on individual system needs.
DTEA II SR and DTEA II SR Plus SC tablets are generally used as part of a program that also provides microbial control. The slow release tablets plus biocide (liquid or solid) constitutes an effective biofilm control program.
Dosage Recommendations:
General initial guideline: 1 tablet per 25 RT (refrigeration tons, or about 300 gal system volume depending on design) for relatively clean systems. Higher dosages may be required for systems that are prone to more fouling.
Note that industrial water systems are designed and operated differently for different applications and thus it is not realistic that one dosage rate will work for all. Thus, the recommended dosage is a good starting point which should be optimized by users.
Approximate tablet dissolving time (depends on factors described below):
- DTEA II SR: 2-3 weeks
- DTEA II SR Plus SC: 3-4 weeks
Factors affecting dissolving time:
- Temperature (typical use temp is 80-90 °F, expect faster dissolving rate above 90 °F and slower dissolving rate below 80 °F).
- Flow rate/mixing around tablet. Slower dissolving rates are expected in slower flow areas, such as by hanging in water spray area below fill, and when using floating feeders.
The full Guidelines for Use can be found here.
