Can the dipstick be left in the sample to develop?
The dipstick should be removed from the sample as soon as the liquid front becomes visible in the result window. Appearance of the liquid front in the result window indicates that enough sample has been absorbed by the dipstick. If the dipstick is left in the sample, the dipstick goes on absorbing the sample which in turn may lead into uncontrollable flow and inappropriate dilution of the critical components on the dipstick.
