Deskripsi Singkat | HANNA HI98118 GroLine Waterproof Hydroponic pH Tester CALL 08128222998
|
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Dukungan Kurir | |
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Telp : 08128222998
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The GroLine HI98118 pH/temperature tester is
our latest pocket meter for measuring the pH of a hydroponic nutrient
solution. This modern looking meter is only 0.7" thick and extremely
ergonomic, fitting comfortably in your hand. The HI98118 has a very
large easy to read LCD display that shows both pH and temperature along
with calibration, stability and low battery indicators. All operations
are simplified to two buttons. One is for turning the meter on/off and
the other for automatic one or two point calibration.
-
Two-Button Operation
-
Quick Calibration Mode using Hanna Quick Cal pH/EC Calibration Solution
-
Extractable Cloth Junction to Extend pH Electrode Life
Details
The HI98118 GroLine pocket pH Tester is an affordable way to measure
the pH of hydroponic nutrient solutions. The maintaining of an optimal
pH is essential to maximize optimum growth. The general rule of thumb is
that as pH increases the solubility of minerals and nutrients decrease.
It is important that nutrients are soluble for plants to uptake and use
for growth. The pH of nutrient solution can also affect the bacteria
that fix nitrogen for the plant to use. Every plant has optimum pH
levels for growth. Below is a table for the ideal pH range for a variety
of plants.
The HI98118 can be used to measure the pH in soils as well as
nutrient solutions. The North Carolina State University has outlined a
procedure known as
This method is used for container plants in which 50 ml of leachate is
collected from a thoroughly watered plant and then tested.
To measure the pH of soil as a slurry the
recommends a mixture of 1 part soil to 1 part water. The slurry is
allowed to rest for 10 minutes so that the solids will settle out and
the pH of liquid above can be measured.
The HI98118 is an advanced meter while maintaining simplicity. The
front of the meter has two buttons. One is for turning the meter on and
off while the other is used to enter the calibration mode. There is a
third button in the battery compartment that allows the user to
customize the meter to their preference. Customization includes
temperature readout in
oC or
oF, automatic shut
off selectable from 8 minutes, 60 minutes or disabled, and lastly the
choice of using Hanna's Quick Cal pH/EC standard or traditional buffers
values of pH 4.01, 7.01 and 10.01.
The HI98118 features a unique extractable cloth junction. The
reference junction of a pH electrode, also known as a salt bridge,
provides an electrical pathway between the internal reference cell and
the sample. Any clogging of the junction will result in a disruption of
the electrical pathway. When this happens the readings will be erratic
and take a very long time to stabilize. With the Hanna extractable
junction a small portion of 1/8" is extracted or pulled to expose a
clean surface. With the junction renewed the clogging is cleared
allowing the meter to still be used. The overall length of the junction
is about 1" so the junction should only be extracted periodically
Features at-a-glance
- Built in temperature sensor for Automatic Temperature Compensated measurements.
- Renewable junction to clear any clogging that causes readings to drift and be erratic .
- Stability indicator that disappears once a stable reading is obtained .
- Automatic calibration to one or two points at a push of a button.
- Uses Hanna's Quick Cal pH/EC standard with a pH value of 6.86. The
standard can also be used to calibrate conductivity meters to 5,000
μS/cm .
- Battery % level remaining displayed at start up.
- Low battery indicator that is displayed when less than 10% battery life is remaining.
Optimum pH Levels for Plants
Vegetable Plants
|
Optimal pH |
Garden/Flower Plants
|
Optimal pH |
Orchard Plants |
Optimal pH |
Artichoke
|
6.5-7.5 |
Acacia
|
6-8
|
Apple
|
5-6.5 |
Asparagus
|
6-8 |
Acanthus
|
6-7
|
Apricot
|
6-7 |
Barley
|
6-7 |
Amaranth
|
6-6.5
|
Apricot
|
6-7 |
Bean
|
6-7.5 |
Bougainvillea
|
5.5-7.5 |
Cherry
|
6-7.5 |
Brussels Sprout
|
6-7.5 |
Dahlia
|
6-7.5 |
Grapefruit
|
6-7.5 |
Corn (Maize)
|
6-7.5
|
Erica
|
4.5-6 |
Grapevine
|
6-7 |
Cucumber
|
5.5-7.5 |
Euphorbia
|
6-7
|
Lemon
|
6-7 |
Early carrot
|
5.5-7
|
Fuchsia
|
5.5-7.5 |
Nectarine
|
6-7.5 |
Early Potato
|
4.5-6
|
Gentian
|
5-7.5 |
Orange
|
5-7 |
Egg Plant
|
5.5-7
|
Gladiolus
|
6-7
|
Peach
|
6-7.5 |
Late carrot
|
5.5-7
|
Hellebore
|
6-7.5
|
Pear
|
6-7.5 |
Late Potato
|
4.5-6
|
Hyacinth
|
6.5-7.5 |
Plum
|
6-7.5 |
Lettuce
|
6-7
|
Iris
|
5-6.5
|
Pomegranate
|
5.5-6.5
|
Melon
|
5.5-6.5
|
Juniper
|
5-6.5
|
Walnut
|
6-8 |
Oat
|
6-7
|
Ligustrum
|
5-7.5 |
|
|
Onion
|
6-7
|
Magnolia
|
5-6
|
|
|
Pea
|
6-7.5
|
Narcissus
|
6-8.5
|
|
|
Pepper
|
6-7 |
Oleander
|
6-7.5 |
|
|
| Pumpkin |
5.5-7.5 |
Paulownia
|
6-8
|
|
|
Rice
|
5-6.5
|
Portulaca
|
5.5-7.5 |
|
|
Soybean
|
5.5-6.5
|
Primula
|
6-7.5 |
|
|
Spinach
|
6-7.5
|
Rhododendron
|
4.5-6 |
|
|
Strawberry
|
5-7.5
|
Roses
|
5.5-7 |
|
|
String Beans
|
6-7.5
|
Sedum
|
6-7.5
|
|
|
Sugar beet
|
6-7
|
Sunflower
|
6-7
|
|
|
Sunflower
|
6-7.5
|
Tulip
|
6-7
|
|
|
Sweet Potato
|
5.5-6
|
Viola
|
5.5-6.5
|
|
|
Tomato
|
5.5-6.5
|
|
|
|
|
Watermelon
|
5.5-6.5
|
|
|
|
|
Wheat
|
6-7
|
|
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| pH Range |
0.00 to 14.00 pH |
| pH Resolution |
0.01 pH |
| pH Accuracy |
±0.1 pH |
| Temperature Range |
0.0 to 50.0°C / 32.0 to 122.0°F |
| Temperature Resolution |
0.1°C / 0.1°F |
| Temperature Accuracy |
±0.5°C /±1°F |
| pH Calibration |
automatic, at one or two points using
standard buffers (pH 4.01, 7.01,10.01); one point calibration using
quick calibration solution |
| Temperature Compensation |
automatic from 0 to 50°C (32 to 122°F) |
| Battery Type/Life |
1.5V CR2032 (1) / approximately 1000 hours of continuous use |
| Environment |
0 to 50°C (32 to 122°F); RH max 100% |
| Dimensions |
160 x 40 x 17 mm (6.3 x 1.6 x 0.7“) |
| Weight |
65 g (2.3 oz.) |
| Ordering Information |
HI98118 GroLine is supplied with
protective cap, (3) HI50036 Quick Cal calibration sachets (20 ml), (1)
HI700601 general purpose cleaning solution sachet (20 ml), (1) CR2032
battery, instruction manual, and quality certificate. |
| Warranty |
1 year (probe 6 months) |
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