INSTRUCTIONS

Starting with step one, enter the value into the text field and press your TAB key to continue. The GRADEX Payback Worksheet will automatically calculate the results and fill in additional information. Only the steps marked with an * require user input, and remember to use your TAB key to advance.

ENGLISH UNITS

Enter the time it takes your technician to perform a manual Rotap test, including the following steps:

Split down sample	Gather sieves	Load sample material
Place sample in Rotap	Start machine	Remove sieve stack
Dump each fraction	Brush each sieve	Weigh and record data
Manually calculate and record percent retained

= Minutes

Assume a 10 minute shake time

+ 10Minutes

Equals total time it takes your operater to perform the manual test

= Minutes

Subtract the time it takes the Gradex 2000 to perform the same test

– 14.5Minutes

Equals number of minutes saved each test

= Minutes

Divide results by 60 to calculate hours saved on each test

/ 60 Minutes

TIME SAVED EACH TEST

= Hours

Multiply by number of tests you perform every day

X Tests/Day

TIME SAVED EACH DAY

= Hours

Multiply by technician's hourly salary, including benefits

According to US Dept of Labor, average benefits for full time employees equal $5.13/hour in addition to normal salary

X Dollars/Hour

MONEY SAVED EACH DAY

= Dollars

Multiply by number of days per year in operation

X Days

TOTAL YEARLY SAVINGS

= Dollars

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