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Atago MASTER-SUR/Nα Clinical Refractometer (Cat. No: 2771)

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Handheld clinical refractometer for measuring urine specific gravity, serum protein, and refractive index in a single device. Metal construction, IP65 protection rating, and automatic temperature compensation ensure reliable performance in laboratory environments.

  • Urine specific gravity measurement range: 1.000 - 1.060 (±0.001)
  • Serum protein measurement range: 0.0 - 12.0 g/100mL (±0.2 g/100mL)
  • Refractive index (nD) measurement range: 1.3330 - 1.3660 (±0.0005)
  • Automatic Temperature Compensation (ATC) for temperature-independent measurements
  • IP65 protection rating for liquid and dust resistance
  • Durable metal construction for laboratory-grade reliability

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The MASTER-SUR/Nα is a premium handheld refractometer manufactured by Atago for clinical and biochemistry laboratory applications. Designed to measure three critical clinical parameters—urine specific gravity, serum protein concentration, and refractive index (nD)—this single instrument streamlines sample analysis workflows and eliminates the need for multiple devices.

The robust metal housing provides durability for demanding laboratory environments, while the IP65 protection rating safeguards against liquid splash and particulate contamination. Automatic Temperature Compensation (ATC) technology ensures measurement stability and accuracy regardless of ambient temperature fluctuations, making it ideal for routine clinical diagnostics.

Measurement ranges and resolution specifications are optimized to deliver clinically significant accuracy in urine and serum analyses. Intuitive operation and rapid readout capability minimize analysis time, enhancing laboratory throughput in high-volume diagnostic settings.

Technical Specifications

Model MASTER-SUR/Nα
Manufacturer Atago
Catalog Number 2771
Housing Material Metal
IP Protection Rating IP65
Temperature Compensation Yes (ATC)
Urine Specific Gravity Range 1.000 – 1.060, ±0.001
Serum Protein Range 0.0 – 12.0 g/100mL, ±0.2 g/100mL
Refractive Index Range (nD) 1.3330 – 1.3660, ±0.0005
Minimum Resolution SG: 0.001, Protein: 0.2 g/100mL, nD: 0.0005

Applications

  • Urine specific gravity measurement in clinical laboratories
  • Serum protein concentration determination
  • Refractive index-based sample analysis in diagnostic workflows

Frequently Asked Questions

What parameters does the MASTER-SUR/Nα measure?
The instrument measures urine specific gravity, serum protein concentration, and refractive index (nD).
Is the refractometer affected by temperature variations?
No, the built-in Automatic Temperature Compensation (ATC) feature ensures consistent and accurate readings across a wide range of ambient temperatures.
Does this instrument have water resistance?
Yes, it features an IP65 protection rating, providing robust resistance to liquid splash and dust ingress, making it suitable for clinical laboratory environments.