---
product_id: 452003157
title: "Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette"
brand: "tekcoplus"
price: "$167.27"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/452003157-clinical-refractometer-atc-tri-scale-serum-protein-0-12-g
store_origin: EC
region: Ecuador
---

# Urine SG range 1.000-1.050 Built-in USB LED light Precision ±0.2 g/100ml protein Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette

**Brand:** tekcoplus
**Price:** $167.27
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your clinical testing game with precision and portability!

## Quick Answers

- **What is this?** Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette by tekcoplus
- **How much does it cost?** $167.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/452003157-clinical-refractometer-atc-tri-scale-serum-protein-0-12-g)

## Best For

- tekcoplus enthusiasts

## Why This Product

- Trusted tekcoplus brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Portable & Durable:** Lightweight 320g aluminum body with rubber grip for on-the-go professionals
- • **Enhanced Visibility:** Integrated USB LED light guarantees clear readings anytime, anywhere
- • **Unmatched Precision:** Accuracy down to ±0.2 g/100ml protein & ±0.005 SG for reliable clinical insights
- • **Triple Diagnostic Power:** Serum protein, urine specific gravity & refractive index all in one sleek device
- • **Smart Temperature Compensation:** Automatic ATC ensures consistent results regardless of environment

## Overview

The TEKCOPLUS RETK-70 Clinical Refractometer is a professional-grade 3-in-1 device designed for accurate measurement of serum protein (0-12 g/100ml), urine specific gravity (1.000-1.050), and refractive index (1.333-1.360 RI). Featuring automatic temperature compensation, a durable aluminum and rubber build, and a built-in USB LED light, it offers reliable, portable, and easy-to-read diagnostics for healthcare professionals.

## Description

Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette

## Features

- HUMAN CLINICAL REFRACTOMETER : 3-in-1 Human clinical refractometer for testing the health index of urine specific gravity and serum protein or Refractive index for Human
- REFRACTOMETER RANGE: Serum protein: 0 - 12 g/100 ml ; Urine specific gravity: 1.000 - 1.050 ; Refractive index: 1.333 -1.360 RI
- DIVISION: Serum protein: 0.2 g/100ml ; Urine specific gravity: 0.005 ; Refractive index: 0.0005 RI
- ACCURACY: Serum protein: -0.2/+0.2 g/100ml ; Urine specific gravity: -0.005/+0.005 ; Refractive index: -0.0005/+0.0005 RI
- MULTIFUNCTIONAL: Features automatic temperature compensation (ATC) and comes with Portable USB LED Light,Lightweight, Made with highest and finest quality of aluminum & rubber

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TEKCOPLUS |
| Manufacturer | TekcoPlus Ltd |
| Country of Origin | USA |
| Model number | RETK-70 |
| Colour | Urine Sg / Serum Protein / Refractive Index |
| Number of Memory Sticks | 1 |
| Special Feature | determines urine specific gravity, protein concentration in plasma or serum, & refractive index of subject being tested. |
| Item Weight | 320 g |
| Package Dimensions | 21.34 x 9.14 x 5.84 cm; 320 g |
| Item model number | RETK-70 |
| Are batteries included? | No |

## Images

![Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette - Image 1](https://m.media-amazon.com/images/I/71bwP0R8gKL.jpg)
![Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette - Image 2](https://m.media-amazon.com/images/I/71tAQANk6yL.jpg)
![Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette - Image 3](https://m.media-amazon.com/images/I/71XbnuY5OXL.jpg)
![Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette - Image 4](https://m.media-amazon.com/images/I/71RVr3dcqDL.jpg)
![Clinical Refractometer ATC Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette - Image 5](https://m.media-amazon.com/images/I/71dBb0735qL.jpg)

## Questions & Answers

**Q: Does it measures the serum protein in calves?**
A: It does have a serum/plasma protein scale on it. You have to use serum or plasma to get that value, not urine.

**Q: How come I don't see any blue area?  I used distilled water and wanted to calibrate , its all white when looking through eyepiece.!!**
A: Yes the instructions are correct in  that you use distilled water and then adjust the instrument using the knob on top.   Distilled water has a Refractive Index (RI) of 1.333 and a Specific Gravity (SG) of 0.   That is why 1.333 on the left side of the scale (the graduations labled "RI") line up with 0.000 on the right side of the scale (the grads labled "SG").

=== !!!! NOT IN SUPPLIED INSTRUCTIONS!!!! =====
The first time you calibrate the instrument you may need to remove the rubber cap/cover from the adjust knob on top the device.   Follow the calibration instructions exactly.   If you cannot see a clear dividing line between Blue and White then very very gently and carefully use the supplied screwdriver to adjust the screw UNDERNEATH the knob's cover.
=============================

**Q: What is the difference between the two products retk-71 and retk-70?**
A: I have the retk-71.  It is a veterinaery refractometer that measures USG for dogs/large animals and cats (separate scales) as well as serum protein.  The retk- 70 has one scale for USG (for humans, dogs, cats) and measures USG, serum protein and refractive index (don't know what that is).   The ranges and divisions are different on the two refractometers (compare the specifications toward the bottom of each description).  I use the retk-71 only for USG testing of my cats.

**Q: Do I must use distilled water to calibrate the refractometer?**
A: Do not use distilled water; a refractometer calibration liquid is required.

## Frequently Bought Together

- 3-in-1 Clinical Refractometer with ATC for Tri-Scale Serum Protein 0-12 g/100ml Urine Specific Gravity SG 1.000-1.050 Refractive Index 1.333-1.360RI w/Extra LED Light & Pipette for Human Use
- moveland 200PCS 3ml Disposable Plastic Transfer Pipettes, Calibrated Dropper Suitable for Science Laboratory, DIY Art
- Clinical Refractometer with ATC, Tri Scale Serum Protein/Urine Specific Gravity/Refractive Index

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-21*