This document describes various hand refractometer models produced by Center Optoelectronics Technology Company Limited. It lists over 20 refractometer models across several categories including salinity, brix, clinical protein, milk, antifreeze, and more. Each model is listed with its measuring range and minimum division or accuracy. The document also includes pictures showing the handheld refractometer, packaging, dimensional cases, factory production, and advantages of the manufacturer.

1. Hand Refractometer SD-Brix (ATC) series
Hand Refractometer SD-Salinity (ATC) series
Salinity
Refractometer
N Model Measuring Range Min.div/Accuracy
2 SDS-100sg
0-100‰ Salinity 0.1% Salinity
1.000-1.070 sg 0.001 sg
3
SDBS-100sg
(3in1)
0-100‰ Salinity 0.1% Salinity
0-10% Brix 0.2 Brix
1.000-1.070 sg 0.001 sg
4 SDS-28 0-28% Salinity 0.2% Salinity
5
SDBS-2832
(2in1)
0-28% Salinity 0.2% Salinity
0-32% Brix 0.2% Brix
Brix Refractometer
N Model Measuring Range Min.div/Accuracy
1 SDB-05 0-5% Brix 0.1% Brix
2 SDB-010 0-10% Brix 0.1% Brix
3 SDB-020 0-20% Brix 0.1% Brix
4 SDB-032 0-32% Brix 0.2% Brix
5
SD-32sg
(Beer)
0-32% Brix 0.2% Brix
1.000-1.120 sg 0.001 nd
6 SDB-050 0-50% Brix 0.5% Brix
7 SDB-2862 28-62% Brix 0.2% Brix
8 SDB-4582 45-82% Brix 0.5% Brix
9 SDB-080 0-80% Brix 0.5% Brix
10 SD090 0-90% Brix 0.5% Brix
11 SDB-5892 58-92% Brix 0.5% Brix
12 SDB-5892Be
58-92% Brix 0.5% Brix
38-43% Be’ 0.5% Be’
12-27% Water 1% Water
13 SDB-5890Be
58-92% Brix 0.5% Brix
38-43% Be’ 0.5% Be’
12-27% Water 1% Water
Center Optoelectronics Technology Company Limited

2. Hand Refractometer SD-Clinical Protein (ATC) series
Clinical Protein
refractometer
N Model Measuring Range Min.div/Accuracy
1 SDC-200
0-12 g/dl 0.2 g/dl
1.000-1.050 sg 0.002 sg
1.3330-1.3600 RI 0.0005 RI
2 SDC-300
2-14 g/dl 0.2 g/dl
1.000-1.060 RI (Dog) 0.001 RI
1.000-1.060 RI (Cat) 0.001 RI
Hand Refractometer SD-Milk (ATC) series
Milk refractometer
N Model Measuring Range Min.div/Accuracy
1 SD-20M 0-20% milk 0.2% milk
2 SD-25douzhi
0-25% douzhi 0.2% douzhi
0-32% Brix 0.2% Brix
Hand Refractometer SD-Oe/Wine (ATC) series
Oe/Wine
Refractometer
N Model Measuring Range Min.div/Accuracy
1 SD-32Oe
0 - 140 °Oe 1°Oe
0 - 27 KMW (Babo) 0.2 KMW
0 – 32% Brix (Sacch.) 0.2% Brix
2 SD-44Oe
0 - 190 °Oe 1°Oe
0 - 38 KMW (Babo) 0.2 KMW
0 – 44% Brix (Sacch.) 0.2% Brix
3 SDW-2540
0-25% Vol 0.2% Vol
0-40% Brix 0.2 Brix
4
SD-80VV
(alcohol)
0-60% Alcohol 1% V/V
60-80% Alcohol 2.5% V/V

3. Hand Refractometer SD-Antifreeze series
N Model Measuring Range Min.div/Accuracy
Antifreeze/
Battery/
Cleaning-Fluids
Refractometer
1 SDA-100
E: -84° F-32° F 5 °F
P: -60° F-32° F 5 °F
B: 1.100-1.400sg 0.01 sg
2 SDA-200
E: -60°C-0°C 5 °C
P: -50°C-0°C 5 °C
B: 1.100-1.400sg 0.01 sg
3 SDA-300
E:-60°F-32°F 5 °F
P:-50°F-32°F 5 °F
B:1.15-1.30sg 0.01 sg
4 SDA-402
E: -50°C - 0°C 5°C
P: -50°C - 0°C 5°C
B: 1.15 - 1.30 sg 0.01 sg
5 SDA-403
E:-50°C-0°C 5°C
P:-50°C-0°C 5°C
C:-40°C-0°C 5°C
B: 1.15 – 1.30 sg 0.01 sg
6 SDA-503
E:-50°C-0°C 5 °C
P:-50°C-0°C 5 °C
C:-40°C-0°C 5 °C
B:1.100-1.400sg 0.01 sg
7 SDA-600
E:-70°C-0°C (-90°F-32°F) 5°C (10°F)
P:-60°C-0°C (-70°F-32°F) 5°C (10°F)
B:1.100-1.400sg 0.01 sg
8 SDA-503Adblue
E:-50°C-0°C 5 °C
P:-50°C-0°C 5 °C
C:-40°C-0°C 5 °C
B:1.100-1.400sg 0.01 sg
Adblue: 30%--35% 0.5%

4. Hand Refractometer Pictures
(1)hand held refractometer(factory production)
(2)Package of hand held refractometer

5. (3)Dimensional cases to choose
(4)Factory Shows
(5)Our advantages
-13 years factory experience in refractometer
-MSDS certification, superior quality
-OEM is available, can produce goods according to your requirements
-Response you within 1 hour, delivery on time
-Factory direct sales, suitable price
-Delivery on time, the best pre-after service for you!