*Average biocontamination
test score of 212 PX (Purifi Index)
through the week ending
April 26, 2021

Purifi’s biopurification rating provides patrons, owners and employees with a straightforward rating of their risk of exposure to bio-contaminated surfaces.

*The average biocontamination test score is evaluated against the hospital standard for contamination of 100PX

5 Stars: VERY LOW RISK
of biocontamination averaging 100 PX or lower, with no sample site test results reading above 100 PX

4 Stars: LOW RISK
of biocontamination averaging 100 PX or lower, with no more than 25% of sample site test results reading above 100 PX and no sample site test results reading above 200 PX

3 Stars: ACCEPTABLE RISK
of biocontamination averaging 100 PX or lower, with no more than 50% of sample site test results reading above 100 PX and no sample site test results reading above 200 PX

2 Stars: RISK CONCERN
of biocontamination averaging 200 PX or lower, with no more than 50% of sample site test results reading above 200 PX and no sample site test results reading above 300 PX

1 Star: UNACCEPTABLE RISK

of biocontamination averaging 300 PX or lower, with no more than 50% of sample site test results reading above 300 PX and no sample site test results reading above 400 PX

0 Star: HAZARDOUS RISK
of biocontamination averaging 301 PX or higher—exceeding 3 times the hospital standard for contamination of 100 PX—with more than 50% of sample site test results reading above 300 PX or a sample site test results reading above 400 PX