Only ships Next Day Air.
To prevent delay, select Next Day Air at checkout. Since refrigeration is required, we ship swabs Monday through Thursday only (to prevent the parcel from being left in terminal over the weekend), in temperature packs with ice pack included when necessary.
Real-time ATP water hygiene test which gives an objective indication of cleanliness in seconds.
Results measured using the 3M Clean-Trace NG or LM1 Luminometer and provided in Relative Light Units (RLU).