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Rp. 1,000
Last Updated
16 Mar 2023
Country Origin
Minimum Order
1 Unit


The SPAD-502Plus is a portable, non-destructive measuring device for the chlorophyll content of leaves widely used to optimise the timing and quantity of fertiliser to improve crop yields.

  • Water resistant (IPX-4)
  • Easy to use clip on sensor
  • Compact and Lightweight
  • Trend graph display
TypeChlorophyll Meter SPAD-502Plus
Measurement subjectCrop leaves
Measurement methodOptical density difference at 2 wavelengths
Measurement area2 mm × 3 mm
Subject thickness1.2 mm maximum
Subject insertion depth12 mm (with stopper having position adjustable from 0 to 6 mm)
Light source2 LED elements
Receptor1 SPD (silicon photodiode)
DisplayLCD panel showing 4-digit measurement value (values shown to first decimal place) and 2-digit number of measurements; Trend graph of values in memory can also be shown.
Display range-9.9 to 199.9 SPAD units
Memory functionMemory capacity for up to 30 values; Calculation/display of average of data in memory also possible
Power source2 AA-size alkaline batteries
Battery lifeMore than 20,000 measurements (when using new alkaline batteries under Konica Minolta test conditions)
Minimum interval between measurementsApprox. 2 seconds
AccuracyWithin ±1.0 SPAD units (for SPAD value between 0.0 and 50.0 under normal temperature/humidity) “*” added to display when measurement exceeds 50.0 SPAD units
RepeatabilityWithin ±0.3 SPAD unitsFor SPAD value between 0.0 and 50.0 (with no change in sample position)
ReproducibilityWithin ±0.5 SPAD units
Temperature driftWithin ±0.04 SPAD units/°C
Operating temperature/humidity range0 to 50°C; Relative humidity of 85% or less (at 35°C) with no condensation
Storage temperature/humidity range-20 to 55°C; Relative humidity of 85% or less (at 35°C) with no condensation
Size; Weight78(W)×164(H)×49(D)mm、200g(excluding batteries
OtherWarning buzzer; User compensation factor
Standard accessoriesDepth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker
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