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Merck

Silver-Foil Psychrometer for Measuring Leaf Water Potential in situ.

Science (New York, N.Y.) (1972-09-01)
G J Hoffman, S L Rawlins
ABSTRACT

The water potential of leaves in situ can be measured without temperature control with a miniature, single-junction psychrometer constructed from silver foil and attached to the leaf with a silver-impregnated, conductive coating. The temperature of the psychrometer has been found to stay within 0.025 degrees C of the temperature of a simulated leaf when the latter temperature was changing at a rate of 1 degrees C per minute. Leaf water potentials can be measured with a precision of +/- 1 bar, or better.

MATERIALS
Product Number
Brand
Product Description

Silver, foil, 10mm disks, thickness 0.5mm, as rolled, 99.99+%
Silver, foil, 50x50mm, thickness 0.25mm, as rolled, 99.95+%
Silver, foil, 0.5m coil, thickness 0.15mm, as rolled, 99.95+%
Silver, foil, 10mm disks, thickness 0.008mm, 99.95+%
Silver, foil, 10mm disks, thickness 1.0mm, as rolled, 99.99+%
Silver, foil, 10mm disks, thickness 0.0125mm, 99.95+%
Silver, foil, 10mm disks, thickness 0.05mm, as rolled, 99.95+%
Silver, foil, 10mm disks, thickness 0.025mm, as rolled, 99.95+%
Silver, foil, 15mm disks, thickness 0.003mm, 99.9%
Silver, foil, 10m coil, thickness 0.0125mm, coil width 9mm, 99.95+%
Silver, foil, 10mm disks, thickness 0.02mm, 99.97%
Silver, foil, 10mm disks, thickness 0.125mm, as rolled, 99.99+%
Silver, foil, not light tested, 100x100mm, thickness 0.0125mm, 99.95+%
Silver, foil, 10mm disks, thickness 0.20mm, as rolled, 99.95+%
Silver, foil, 10mm disks, thickness 0.025mm, as rolled, 99.99+%
Silver, foil, not light tested, 300x300mm, thickness 0.025mm, as rolled, 99.95+%
Silver, foil, not light tested, 100x100mm, thickness 0.0025mm, 99.97%
Silver, foil, light tested, 50x50mm, thickness 0.0125mm, 99.95+%
Silver, foil, 4mm disks, thickness 0.5mm, as rolled, 99.99+%
Silver, foil, 4mm disks, thickness 0.0125mm, 99.95+%
Silver, foil, 50mm disks, thickness 0.05mm, as rolled, 99.95+%
Silver, foil, 4mm disks, thickness 1.0mm, as rolled, 99.95+%
Silver, foil, 4mm disks, thickness 0.015mm, 99.97%
Silver, foil, 8mm disks, thickness 0.035mm, as rolled, 99.95+%
Silver, foil, 8mm disks, thickness 0.008mm, 99.95+%
Silver, foil, light tested, 100x100mm, thickness 0.02mm, 99.97%
Silver, foil, 8mm disks, thickness 0.05mm, as rolled, 99.95+%
Silver, foil, 6mm disks, thickness 0.5mm, as rolled, 99.99+%
Silver, foil, 8mm disks, thickness 0.007mm, 99.97%
Silver, foil, 6mm disks, thickness 1.0mm, as rolled, 99.95+%