Hangzhou Sumer Instrument

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Chlorophyll Meter

Chlorophyll Meter

Introduction: 1.Measures leaf chlorophyll, an important indicator of plant health. The SPAD-502Plus performs quick measurements of the chlorophyll content of leaves without damaging the leaf. Its lightweight, splashproof design make it ideal for measurements in the field. 2.Non-destructive...

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Product Details

Introduction:

1.Measures leaf chlorophyll, an important indicator of plant health.
The SPAD-502Plus performs quick measurements of the chlorophyll content of leaves without damaging the leaf. Its lightweight, splashproof design make it ideal for measurements in the field.

2.Non-destructive measurement of plant chlorophyll
The SPAD-502Plus enables quick, easy measurement of the chlorophyll content of plant leaves without 
damaging the leaf. Chlorophyll content is one indicator of plant health, and can be used to optimize the timing and quantity of applying additional fertilizer to provide larger crop yields of higher quality with lower environmental load.

3.Features Product Overview

Quick, easy measurement of chlorophyll levels in plant leaves without damaging the leaf.

Measurements are taken by just closing the measuring head on the leaf. Since the leaf is not cut off 
or damaged in any other way, the same leaf can be measured as the plant grows.
Trend graph display
Up to 30 measurements can be stored in memory and displayed on a trend graph, so that changes in 
measurements over time can be seen and abnormal values can be noticed at a glance.
Water-resistant
The SPAD-502Plus is water-resistant (IPX-4) so it can be used outdoors even in the rain.
* It is not immersible, and should not be washed with water.
Compact and lightweight for portability
The SPAD-502Plus is small enough to fit in a pocket and weighs only 200g, so it can be taken anywhere.
Low power consumption
The SPAD-502Plus uses LED light sources, resulting in extremely low power consumption, with 
approximately 20,000 measurements from one set of fresh alkaline-manganese batteries.
Principal Applications
Monitoring of growth and health of plants
The SPAD-502Plus can be used to monitor the growth and health status of a wide variety of agricultural products, including wheat, rice, corn, cotton, etc.
Nitrogen fertilization optimization
The SPAD-502Plus can be used for determining when and how much nitrogen fertilizer should be provided to plants. Optimizing fertilization in this way leads to not only greater yields of higher quality, but also results in less over-fertilization, reducing environmental contamination due to the leaching of excess fertilizer into the soil and underground water.

4.Specifications

Measurement methodOptical density difference at two 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 measurements
Approx. 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 units(SPAD value between 0.0 and 50.0 
with no change in sample position)
Dimensions78 (W) ×164 (H) ×49 (D) mm
Weight200 g (excluding batteries)

We are professional as one of the leading chlorophyll meter manufacturers and suppliers in China. Welcome to wholesale the high quality and durable laboratory equipment from our factory. And good after-sale service and timely delivery are offered.

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