Potasyum İyonu Ölçer Cep Tipi HORIBA LaquaTwin B731

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Potassium Ion Meter Handheld HORIBA LaquaTwin B731 | HORIBA

Fiyat Sorunuz

Portable potassium ion (K⁺) measurement device with ion-selective electrode technology for field and laboratory applications

  • Ion-selective electrode (ISE) measurement principle for high selectivity
  • Measurement range: 39 to 3900 ppm (mg/L) / 10⁻³ to 10⁻¹ mol/L
  • Ultra-low sample volume: 0.05 mL with sample paper, standard 0.3 mL
  • Two-point calibration with automatic range switching
  • IP67 water and dust protection for field durability
  • Automatic temperature compensation for consistent accuracy
  • Approximately 400 hours battery life with 2 × CR2032 batteries
  • Compact handheld design: 164 mm × 29 mm × 20 mm
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2-3 Gün

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1-3 Gün

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Daha fazla detay

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Daha fazla detay

The HORIBA LaquaTwin B731 Potassium Ion Meter is a portable analyzer designed for rapid, reliable, and precise potassium (K⁺) ion measurements using ion-selective electrode (ISE) principle. Featuring advanced membrane technology and compact form factor, it is suitable for both field and laboratory environments. Operating with minimal sample volume (0.05 mL), it delivers effective solutions for diverse applications including soil testing, food quality control, and cultivation management.

Technical Specifications

Model B-731
Measurement Principle Ion-selective electrode method
Measurement Range 39 to 3900 ppm (mg/L) / 10⁻³ to 10⁻¹ mol/L
Minimum Sample Volume 0.05 mL (with sampling paper), standard 0.3 mL
Calibration Two-point calibration
Accuracy ±10% of reading
Display Dedicated monochrome digital LCD
Range & Resolution 0–1.0 ppm: 0.1 ppm | 0–99 ppm: 1 ppm | 100–990 ppm: 10 ppm | 1000–9900 ppm: 100 ppm
Features Automatic range switching, temperature compensation, auto-hold, auto-off (30 min)
IP Protection Rating IP67 (water and dust resistant)
Operating Temperature & Humidity 5–40 °C, ≤85% relative humidity (non-condensing)
Power Source 2 × CR2032 batteries
Battery Life Approximately 400 hours continuous operation
Material ABS epoxy
Dimensions 164 mm × 29 mm × 20 mm (excluding protrusions)
Weight Approximately 50 g (without batteries)
Ion Selectivity Coefficients Rb⁺ = 1×10⁻¹, Mg²⁺ = 1×10⁻⁵, NH₄⁺ = 7×10⁻³, Ca²⁺ = 7×10⁻⁷, Cs⁺ = 4×10⁻³, Na⁺ = 3×10⁻⁴

Applications

  • Soil testing and agricultural analysis
  • Food quality control and process monitoring
  • Cultivation and plant nutrient management
  • Water quality assessment
  • Environmental monitoring
  • Field and on-site laboratory analysis

Frequently Asked Questions

What is the minimum sample volume required?
The B731 can operate with as little as 0.05 mL of sample using sampling paper, with a standard volume of 0.3 mL. This ultra-low volume requirement makes it ideal for precious or limited samples.
How long does the battery last?
With two CR2032 batteries installed, the device provides approximately 400 hours of continuous operation, ensuring extended field deployment capability.
Is the meter waterproof for field use?
Yes, the B731 features IP67 protection rating, making it water and dust resistant for reliable performance in challenging field environments.
What calibration procedure is required?
The meter uses two-point calibration to establish the measurement curve, ensuring high accuracy across the measurement range.
How does temperature compensation work?
The device automatically compensates for temperature variations during measurement, maintaining measurement accuracy within specified limits across the 5–40 °C operating range.
Which ions interfere with potassium measurement?
Ion selectivity coefficients show relative interference: Rb⁺ has highest interference (1×10⁻¹), while Ca²⁺ and Mg²⁺ have minimal interference. The sensor is highly selective for K⁺ ions.

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