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MASS FLOW CONTROLLER (MFC). THIS ELECTRONIC PRODUCT IS USED TO MEASURE AND CONTROL THE FLOW OF GAS. WHEN GAS FLOWS THROUGH THE MFC, TEMPERATURE CHANGES ARE DETECTED BY THE THERMAL SENSOR. THIS TEMPERATURE GRADIENT IS USED TO COMPUTE THE MASS FLOW RATE. THE MFC CAN PROPORTIONALLY CONTROL THE FLOW RATE OF GAS TO A GIVEN FLOW SET POINT.

A CYCLING POROMETER WHICH IS HAND HELD AND IS USED FOR MEASURING THE STOMATAL RESISTANCE OF PLANT LEAVES. IT IS A MEASURE OF THE RESISTANCE TO LOSS OF WATER VAPOUR THROUGH THE STOMATA AND IS AN INDICATOR OF THE PHYSIOLOGICAL STATE OF THE PLANT. IT WORKS BY MEASURING THE TIME IT TAKES FOR A LEAF TO RELEASE SUFFICIENT WATER VAPOUR TO CHANGE THE RELATIVE HUMIDITY IN A SMALL CHAMBER BY A FIXED AMOUNT. THIS IS COMPARED WITH A CALIBRATION PLATE OF KNOWN RESISTANCE IN ORDER TO DERIVE THE STOMATAL RESISTANCE OF CONDUCTANCE OF THE LEAF. THE INFORMATION IS DISPLAYED ELECTRONICALLY ON THE DEVICE'S SCREEN.

A GAS LEVEL MEASUREMENT DEVICE DESIGNED TO MEASURE THE LEVELS OF CERTAIN GASES IN AMBIENT AIR AND IN THE WORKPLACE. MONITORS: H2S, CO, 02, SO2, PH3, CL2, NH3, NO2, HCN, CLO2, 03 AND COMBUSTIBLES. THE UNIT PROVIDES NO ANALYSIS OF THE GAS LEVEL MEASUREMENTS THAT ARE TAKEN. THE DEVICE DISPLAYS THE CONCENTRATION OF GASES THAT ARE MEASURED ON AN INTEGRATED LCD. AUDIO, VISUAL AND VIBRATING ALARMS ALERT THE USER WHEN DANGEROUS GAS CONCENTRATIONS ARE DETECTED. SIZE 5.7 X 2.9 X 1.5 INCHES. WEIGHT 13.1 OZ. INTEGRAL CONCUSSION-PROOF BOOT. WATER-RESISTANT. BATTERY OPERATED.

A GAS LEVEL MEASUREMENT DEVICE DESIGNED TO MEASURE THE LEVELS OF CERTAIN GASES IN AMBIENT AIR AND IN THE WORKPLACE. MONITORS FOR ANY SINGLE GAS HAZARD, WITHIN ITS WIDE RANGE OF AVAILABLE GAS MODELS THE UNIT PROVIDES NO ANALYSIS OF THE GAS LEVEL MEASUREMENTS THAT ARE TAKEN. THE DEVICE DISPLAYS THE CONCENTRATION OF GASES THAT ARE MEASURED ON AN INTEGRATED LCD AUDIO, VISUAL AND VIBRATING ALARMS ALERT THE USER WHEN DANGEROUS GAS CONCENTRATIONS ARE DETECTED. SIZE 1.1 X 2.0 X 3.75 INCHES WEIGHT 2.9 OZ BATTERY OPERATED

A GAS LEVEL MEASUREMENT DEVICE DESIGNED TO MEASURE THE LEVELS OF CERTAIN GASES IN AMBIENT AIR AND IN THE WORKPLACE. MONITORS: H2S, CO, O2, SO2, PH3, CL2, NH3, NO2, HCN, CLO2, 03 AND COMBUSTIBLES. THE UNIT PROVIDES NO ANALYSIS OF THE GAS LEVEL MEASUREMENTS THAT ARE TAKEN. THE DEVICE DISPLAYS THE CONCENTRATION OF GASES THAT ARE MEASURED ON AN INTEGRATED LCD AUDIO, VISUAL AND VIBRATING ALARMS ALERT THE USER WHEN DANGEROUS GAS CONCENTRATIONS ARE DETECTED. INTEGRAL CONCUSSION-PROOF BOOT. SIZE 5.7 X 2.9 X 1.5 INCHES. WEIGHT 13.1 OZ. BATTERY OPERATED. WATER RESISTANT.