The EK-i and EW-i series balances have the following features: The EK-i series are high resolution type electronic balances having a resolution of 1/6,000 ~ 1/60,000. The EW-i series are triple range balances and each range has a resolution of 1/3,000. The balance has a counting function, % function and a comparator function. The backlight LCD will help with use in a dimly lighted place. The standard RS-232C serial interface can be connected to a printer or personal computer. Using the serial interface, Good Laboratory Practice (GLP) data can be output. The optional rechargeable battery pack (OP-09) is easy to install for cordless operation.