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1. INTRODUCTION
Thank you for choosing the SC-1 Leaf Porometer from METER Group.
The SC-1 measures stomatal conductance, which is a function of the density, size, and
degree of opening of plant pores. The SC-1 measures stomatal conductance by putting the
conductance of a leaf in series with two known conductance elements and comparing the
relative humidity (RH) measurements between them. This manual describes the functions of
the SC-1 and how to make high-quality stomatal conductance measurements.
Verify all SC-1 Leaf Porometer components are included and appear in good condition:
• SC-1 sensor head (Section3.2)
• SC-1 controller (Section3.3)
• USB-to-serial cable
• USB drive with Leaf Porometer Utility (attached to manual cover)
• Calibration plate
• Bottle of deionized (DI) water
• Bottle of desiccant
(
molecular sieve desiccant, 812 mesh)
• Dispensing cap
• Tweezers
• Leaf pads
• Bead retention screens
• Teflon filters
• Calibration filter papers
(Whatman
®
filter paper, grade #3)
• Spare hinge pin
• Short hinge pin
• White fluoropolymer agitation beads
(McMaster-Carr
®
PTFE balls, 1/8 in, part #9660K13)
The SC-1 was shipped without batteries to preserve battery life and prevent damage to the
instrument. Install four AA batteries in the SC-1 controller prior to use.
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