Image
EAN-130717267202374   EAN-13 barcode 0717267202374
UPC-A717267202374   UPC-A barcode 717267202374
BrandFilterBuy
Product Name4 - Holmes HWF65 & H65-C Humidifier Wick Filters. Designed by FilterBuy to replace Holmes Part # HWF-65.
CategoryHome: Appliances
Short DescriptionSet of 4 HWF65 Holmes Replacement Humidifier Wick Filters. Premium aftermarket replacement, manufactured by FilterBuy. Designed to fit Holmes humidifier models HM1800, HM1840, HM1845, HM1850, HM1851, HM1855, HM1865, HM1888, HM1889, HM1895, HM1975, HM
Created07-23-2018 1:54:12am
Modified05-23-2020 2:07:47pm
MD50981c2a5a585cfe50d56372e13f97d46
SHA256882f442f78b802b80dd016ef9a0d5c91a3e83bbbc9623eaee28f6954236dc9de
Search Googleby EAN or by Title
Query Time0.0084059

Article of interest

ISBN stands for International Standard Book Number. Originally this was a 10 digit number known as ISBN-10, but has been replaced with a 13 digit version known as ISBN-13 (aka EAN-13) to better fit in with the industry standard product numbering system.

The ISBN system offers a unique numbering system for books and publications of various types. ISBN offers 9 identification digits for each book or publication and one check digit. ISBN-13 expands the available number set by doubling the available numbers. You might think that the extra three digits would more than double the available numbers but ISBN is limited within the EAN-13 numbering system and will always start with 978 or 979 as the first three digits, leaving only 9 more digits for the actual identification digits and again the last digit is the check digit.

Any ISBN-10 number can be converted to ISBN-13. Any ISBN-13 number that starts with 978 can be converted back to ISBN-10. ISBN-13 numbers that start with 979 cannot be converted to ISBN-10.

The conversion process from ISBN-10 to ISBN-13 is a rather simple one. Start with the first 9 digits of the ISBN-10 number, place 978 in front and calculate the new check digit using the standard EAN check digit calculation.

If you want to calculate the check digit for ISBN-10, that is done using a MOD-11 calculation that is very different than the EAN check digit process.

ISBN-1-5905-9332-4

Look at the number above and below the barcode. You will see that except for the last digit in the ISBN number, all of the digits exist in the 13 digit version shown under the barcode right after the 978 and just before the new check digit of 5.

Now you can see how easy it is to convert between ISBN-10 and ISBN-13.

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