The wide-mouth dosing area is designed so you can fill the strip on the very first try with just 0.6 microliter of blood. A larger, wider strip is easy to use for people of all ages. Electrodes at top of strip work with meter technolooy to help detect and prevent unreliable results. For use with ACCU-CHEK Aviva meter. Customer must be preapproved to order DME/HME product.