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| | Spa Maintanence |
 | | In the case of a commercial spa that may handle an average of 25 bathers a day, the amount of TDS from human sweat alone could be as much as 50 ppm every day. |
 | | And don't forget, bathers also bring with them residual soap, deodorant, hair spray, suntan lotion, body oil, hair gel, laundry detergent, hand lotion, cosmetics and other personal-care substances - all of which can contribute to the build up of TDS. |
 | | For example, a 1,200-gallon commercial spa with an average bather load of 25 people a day should be drained after 16 days of use: |
| www.insparation.com /TDSpage2004.htm (658 words) |
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