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For Android: 4.4 and up Guide: NPC LSI Calc cheats tutorial
When updated: 2018-03-04 Star Rating: 0
Name: NPC LSI Calc hack for android Extension: Apk
Author: National Plasterers Council File Name: com.mobiheights.npclsicalc
Current Version: 1.3 User Rating: Everyone
Downloads: 10-50 Version: mod, apk, unlock
System: Android Type: Education


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About the application:

The NPC LSI Calc is the newest, most advanced and most accurate calculator for determining the Langelier Saturation Index (LSI) for swimming pool and spa water. It was developed by noted pool and spa water chemistry expert and author, Robert W. Lowry. It is the only LSI calculator that currently has exact adjustments for cyanuric acid and borate.The LSI is used to predict if pool or spa water is corrosive, balanced or scaling. The NPC LSI Calc uses the original mathematical equations which use logarithms, square roots, and interpolated constants for calculations. We do not use inaccurate lookup tables and factors. The actual water try results are used for calculations.The NPC LSI Calc is simple to use, you input the customer or pool name and then the water try results for pH, Total Alkalinity (TA), Cyanuric Acid (CYA) Borate (B) Calcium Hardness (CH), Total Dissolved Solids (TDS), and the water Temperature (T) in degrees Fahrenheit. The LSI with adjustments is automatically calculated and displayed. The background color of the LSI value changes from green to amber to red depending on whether the water is Corrosive, Acceptable, Ideal, or Scaling. This gives a visual or at a glance message of the water’s condition.The original LSI was never intended for predicting corrosive, balanced or scaling water conditions for pools or spas. In fact, it was developed in 1936 which was a lot of years before the development of Cyanuric Acid (CYA) which became famous around 1960 and remains so. The very famous trichlor chlorine tablets actually include 56 % CYA and so as chlorine is dispensed, the CYA builds up in the water. CYA has a direct influence on Total Alkalinity (TA) so an adjustment had to be created to the original LSI calculation.Another family of chemicals that have become famous recently as a pH buffer and algaestat in swimming pool and spa water are borates. Borates also have an influence of TA. Using borates in pool or spa water keeps the pH from rising but also requires an adjustment to TA and therefore has an result on the LSI calculation too.We have determined the exact affect borate and CYA will have on LSI calculations and built in the mathematical adjustments to the NPC LSI Calc App.The goal mathematically is to have an LSI of near 0.00 but any value from –0.30 to + 0.50 is either Acceptable or Ideal. Positive values present increasing tendencies for forming scale and values more than +0.50 indicate scaling water conditions that require action. Negative values present increasing tendencies for being corrosive or aggressive and values greater than –0.30 indicate corrosive water that requires action.We do not suggest which water conditions to change or chemical amounts to adjust the water balance or LSI. Which condition to adjust is best accomplished by the service tech, pool owner or pool shop. There may be reasons that one condition or other cannot be changed or perhaps a condition is easier to change than other. But you can input fresh amounts for any condition to see what affect it will have on LSI.Results can be saved and reviewed. The number of records saved is only limited by your phone’s memory. It is simple to delete of records.Protecting the pool or spa surface, plumbing and equipment and having balanced water for your customers, your family or guests are simple with the NPC LSI Calc.

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