ATP Meters & Swabs £230.00 – £1,404.00 ex. VAT SystemSure Plus Meter. Includes ATP meter, case, carry handle, data lead, data analysis software. ATP Free Pens – Measures dissolved non-microbial ATP free in solution – Includes 100 pens ATP Total Pens – Measures both free and microbial ATP in solution – Includes 100 pens ATP Ultrasnap Surface Pens – All in one surface swab for microbial ATP (Recommended for food prep areas)- Includes 100 pens ATP Supersnap Surface Pens – All in one surface swab for microbial ATP (For deep cleans including pharma, allergen control) – Includes 100 pens The difference between both free and total indicates the microbial contamination. Pens must be kept refrigerated upon receipt or shelf life will be dramatically reduced.