Made in JAPAN
PACKTEST is the most simplified analysis instrument for water quality check. Most of the PACKTEST utilize absorptiometry from corresponding Japanese official method (i.e. JIS K 0102) for its reaction principle.
In other cases, like there is no absorptiometry set under the official method, meaning that there is no ideal reagent available with high sensitivity and selectivity of objective substance, so we came up with our own ingenuity utilizing to add masking and other technique.
When the PACKTEST uses the same principle as the official method, the interference from co-existing substances will be similar. Removing the interference by utilizing the pre-treatment under JIS, may be necessary prior to the measurement.