Grand Index Solution Enterprise Limited
Hong Kong SAR

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• Products Catalog [26]
  • Digital Gem Refractometer GI-DG800
  • Helmet Magnifier MG81007-A
  • high accuracy Optical Quadrant STQ-II
  • high accuracy Optical Quadrant STQ-I
  • Magnifier/ loupe GI-7173
  • Ultrasonic Cleaner CD-3800
  • Digital Hygro-thermometer GILT-1
  • Digital Thermometer GITC-4
  • Outside Digital Micrometer ZX13101040
  • Caliper and Gauge GI-G6003
  • Honey Refractometer RHB-90ATC
  • Salinity Refractometer RHS-28ATC
  • Brix refractometer RHB0-80 0 to 80% Brix
  • Circle LED Light GI-HG-03
  • TDS-meters DDS-EC
  • TDS-Meters ZDRS-200
  • PH-meters GI-pH901B
  • PH-meters GI-P3
  • Fiber Microscope GICL-200S
  • Pocket scales/ Balance GICS5-11
  • Hardness Pencil GIHP-01
  • Bench Type Polariscope GS-PS1
  • Loupe/ magnifier GI-21007
  • Gem Refractometer GI-181-1 With Built-in Light Source
  • PH-meters GI-P2
  • Brix Refractometer RHB-18ATC
• refractometer
  • Brix Beer Brewing RSG-100ATC
  • Salinity Refractometer RHS-10ATC
  • Wine/ Oe refractometer RHW-80ATC
  • Antifreeze/ Battery Refractometer RHA-200ATC
  • Honey Refractometer RHF-30ATC
  • Clinical Refractometer RHC-200ATC
  • Oil Refractometer RND-025ATC
  • Industrial/ Cutting Liquids Refractometer RHB-32ATC
  • Brix refractometer RHB0-80 0 to 80% Brix
  • Salinity Refractometer RHS-28ATC
  • Honey Refractometer RHB-90ATC
  • Brix Refractometer RHB-18ATC
• digital thermometer
  • Digital Hygro-thermometer GILT-1
  • Digital Thermometer GITC-4
  • Digital Thermometer GIPT-3
  • Digital Thermometer GITC-3
  • Digital Aquarium Thermometer SDT-1
  • Digital Hygro-thermometer BT-2
  • Digital Hygro-thermometer DT-2
• PH-TDS meters
  • TDS-meters DDS-EC
  • PH-meters GI-P2
  • PH-meters GI-7011
  • PH-meters GI-P1
  • PH-meters GI-pH902A
  • PH-meters GI-SM05
  • TDS-meters ZDS-mS/ cm
  • PH-meters GI-P3
  • PH-meters GI-pH901B
  • TDS-Meters ZDRS-200
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PH-TDS meters

PH meters range from simple and inexpensive pen-like devices to complex and expensive laboratory instruments with computer interfaces and several inputs for indicator (ion-sensitive,redox), (reference electrodes, and temperature sensors such as thermoresistors or thermocouples. Cheaper models sometimes require that temperature measurements be entered to adjust for the slight variation in pH caused by temperature. Specialty meters and probes are available for use in special applications, harsh environments, etc. Pocket pH meters are readily available today for a few tens of dollars that automatically compensate for temperature (ATC, Automatic Temperature Compensation).

We have all kinds of ph-meters, TDS meters for more choice.

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  TDS-meters DDS-EC

  Origin:

  China

  Key Features:
  Waterproof
  Low Power Consumption
  Automatice Switch-off
  Low-battery Alarm ( as long as there is any display the accuracy is guaranteed)
  
  Specification:
  ....

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  PH-meters GI-P2

  Origin:

  China

  Specification:
  
  Measuring Range: 0.0 - 14.0 pH
  
  Resolution: 0.1 pH
  
  Accuracy: Â ± 0.1 pH
  
  Calibration: 2 points
  
  Plug: Fixed Electrode
  
  Size: 150 x 29 x 15 mm

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  PH-meters GI-7011

  Origin:

  China

  Features:
  1. Microprocessor based for fast and accurate measurements.
  2. Special viewing angle designed of waterproof housing IP 67 rated.
  3. Large LCD display pH or....

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  PH-meters GI-P1

  Origin:

  China

  Specification:
  Measuring Range: 0.0 - 14.0 pH
  Resolution: 0.1 pH
  Accuracy: Â ± 0.1 pH
  Calibration: 2 points
  Plug: BNC
  Size: 150 x 29 x 15 mm

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  PH-meters GI-pH902A

  Origin:

  China

  Feactures:
  Waterproof Mini PH Tester
  High resolution ( 0.01 pH resolution)
  Totally Waterproof
  Low Power Consumption
  Automatice Switch-off
  Low-battery Alarm ( as long as....

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  PH-meters GI-SM05

  Origin:

  China

  Guarantee: Offers 6 months warranty
  
  Specifications:
  Brand: Control Wizard
  Type: Fertilizers and Soil Treatments
  Measuring Range 3-8 pH
  Moisture: 1-8
  Size 160mm x 50mm ( ....

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  TDS-meters ZDS-mS/ cm

  Origin:

  China

  Key Features:
  Waterproof
  Low Power Consumption
  Automatice Switch-off
  Low-battery Alarm ( as long as there is any display the accuracy is guaranteed)
  
  Specification:
  ....

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  PH-meters GI-P3

  Origin:

  China

  Specification
  Measuring Range: 0.0 - 14.0 pH
  Resolution: 0.1 pH
  Accuracy: Â ± 0.1 pH
  Calibration: 2 points
  Tem: ATC
  Plug: Fixed Electrode
  Size: 150 x 29 x 15 mm

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  PH-meters GI-pH901B

  Origin:

  China

  Feactures:
  Waterproof Mini PH Tester
  High resolution ( 0.01 pH resolution)
  Totally Waterproof
  Low Power Consumption
  Automatice Switch-off
  Low-battery Alarm ( as long as....

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  TDS-Meters ZDRS-200

  Origin:

  China

  Key Features
  
  The highly reliable constant read monitors that hang on the wall, measures PH, Conductivity and Temperature simultaneously. Specially designed to achieve high....

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