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Verifiers

NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?
Verifier allows you to validate the tax identification number entered

Tax identification number is a code used to identify taxpayers in Poland, which consists of 10 digits.



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Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?
Calculator allows you to verify the ISBN number entered.
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Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.
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Verifiers

Verifier numbers EAN-13 preview

 Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.          
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Medical

GFR - glomerular filtration rate

Glomerular filtration rate (called glomerular filtration rate, GFR) - the amount of plasma filtered per unit time by the so-called glomeruli. primary urine. Is usually given in ml / min. GFR allows the assessment of renal function.                  
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Financial

Coverage of debt

Calculator to the data calculated debt coverage ratio. WPD - is often used as an indicator in assessing credit worthiness.              
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Physical

Resistivity and conductivity

The calculator calculates the resistivity and conductivity of the material from the resistance, cross-sectional area and the length of the element at 20 ° C.            
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Life

Calculator child's blood group

Calculator based on blood group made ​​of both parents, given that they are owned by the child possible blood groups.
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Building

Compare the cost of heating oil and pumps OCHSNER

Calculator is used to compare the operating costs for heating oil and pumps OCHSNER.