WPI EVOM - TEER Calculations

EVOM™ Manual
World Precision Instruments 47
= 670 Ω * 0.331 cm
2
= 221.77 Ω-cm
2
.
221.77 Ω is the resistance of a unit area of 1 cm
2
(TEER).
The larger the membrane, the lower the resistance. The dimension is Ω-cm
2
, not Ω / cm
2
.
TEER Calculations
TEER is a normalized value of resistance per 1 square centimeter of unit area. To
compute TEER, multiply the measured resistance by the surface area’s listed below.
For example, a 6.6 mm insert measures 1707 Ω, the TEER is 1707 Ω * 0.331 or 565 Ω.
• 6 well plate (24 mm inserts) 4.53 cm
2
• 12 well plate (12 mm inserts) 1.13 cm
2
• 24 well plate (6.5 mm inserts) 0.3316 cm
2
• 96 well plate (4.3 mm inserts) 0.145 cm
2