Atago 3749 PEN-Wrestling Digital Hand-Held Urine Specific Gravity PEN Refractometer

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Price: $474.08    

Product Feature

• Handheld, digital, clinical refractometer for urine specific gravity (SG) measurement in a 1.0000 to 1.0600 range to determine hydration levels of athletes during events such as wrestling
• Ergonomic, pen-shaped body (16 x 3.8 x 1.8cm), thin prism head for one-handed operation, with two measurement process options
• Automatic temperature compensation (ATC) for immediate, accurate calibration readings, regardless of ambient temperature
• External light interference (ELI) feature displays warning message when direct light is detected
• Body has Ingress Protection (IP)-65 rating for protection against dust and low pressure water, and prism head has IP-67 rating for protection against dust and liquid immersion, for ease of cleaning

Product Description

The Atago 3741 PEN-Wrestling is a handheld, pen-shaped, digital refractometer that measures urine specific gravity (SG) in a 1.0000 to 1.0600 range, has external light interference (ELI) warning, automatic temperature compensation (ATC), and is commonly used by athletes. A refractometer measures the refractive index of a liquid or solid in a sample, converts it to concentration in units of percent by weight, and displays the results. Refractometers are commonly used in the optical, chemical, geological, ecological, culinary, food and beverage, pharmaceutical, and educational industries, and for water-testing applications.

This refractometer has a compact, ergonomic, pen-shaped body (16 x 3.8 x 1.8cm), with a thin prism head for one-handed operation, and two measurement process options. A sample is measured by dipping, touching, or stirring the tip into the sample. The unit has automatic temperature compensation (ATC) for immediate, accurate calibration readings, regardless of ambient temperature, and can be calibrated with water. An external light interference (ELI) feature displays a warning message when direct light is detected. A zero key provides easy reset capability. The body has Ingress Protection (IP)-65 rating for protection against dust and low pressure water, and the prism head has IP-67 rating for protection against dust and liquid immersion, and ease of cleaning. The 3741 PEN-Wrestling digital LCD displays measurement values in two seconds. This device comes with a strap holder, and plastic protective carrying case that snaps closed.

Specifications

Measurement scale range	Urine specific gravity (SG), 1.0000 to 1.0600
Measurement resolution	Urine SG 0.0001
Measurement accuracy	Urine SG + or - 0.0010
Sample measurement temperature	10 to 40 degrees C (ATC)
Ambient temperature	10 to 40 degrees C
Measurement time	2 seconds
Display	Digital, LCD
Power supply	Included AAA alkaline battery (1)
Dimensions	16 x 3.8 x 1.8 cm (H x W x D)
Weight	70g

 

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Refractometers are used to determine substance content in a sample, to provide unit readings of substances including Brix, salinity, and alcohol; to detect chemical impurities, or to measure components of samples such as industrial fluid. Refractometers measure the refractive index of a substance, which is its optical characteristic, and the number of dissolved particles in it. The refractive index is the ratio of the speed of light in empty space to the speed of light in a substance; when light passes from one medium to another. Generally, a low concentration sample has a larger angle of refraction than a high concentration sample. For example, a straw placed in a high-concentration substance appears more bent than when placed in a low-concentration substance. Refractometers can work with natural light, or with an external power source such as batteries or electricity. They typically have either a digital or analog reading display, though some units utilize both types. Some analog-display refractometers can be used for both solids and liquids. Digital-display refractometers are used exclusively for liquids. Types of refractometers include handheld, benchtop, and in-process. Handheld refractometers are elongated and telescope-shaped, or shorter and rectangular. Analog handheld refractometer readings are obtained by looking through the monocular eyepiece and viewing where the boundary line intersects with the memory line. Digital handheld models provide a digital readout. Benchtop refractometers typically measure with a higher degree of accuracy than handheld units. In-process refractometers are used for continuous process monitoring and data readouts, and are generally fitted into a piping system for ongoing analysis. Refractometers are used in a wide variety of applications in the culinary, food and beverage, pharmaceutical, educational, geological, chemical, ecological, and automotive industries, and for water-testing applications.

Atago Co., Ltd. manufactures analytical instruments such as refractometers, polarimeters, and saccharimeters, as well as a variety of meters. The company, founded in 1940 and headquartered in Tokyo, offers products that comply with Hazard Analysis and Critical Control Points (HACCP), Good Manufacturing Practices (GMP), and Good Laboratory Practices (GLP) system standards, and many International Organization for Standardization (ISO) standards.

What’s in the Box?

• 3741 PEN-Wrestling refractometer
• AAA battery
• Plastic storage case
• Instructions

Atago 3749 PEN-Wrestling Digital Hand-Held Urine Specific Gravity PEN Refractometer Review

I have 2 Miniature Schnauzers - both have bladder and kidney stones. One of the ways they're medically managed is to check their urinary pH and Specific Gravity at least once a week; it was easy to find the correct strips for the pH testing, but I originally didn't purchase a refractometer 1.) because there are MANY of them available for a variety of uses and I found it very confusing to try to decide which one was best for my needs, and 2.) there are WIDE price variations. But I needed to decide on one because I had to pay their vet $22 for each Specific Gravity check.

After hours of research I finally decided on this PEN Atago 3749 PEN-Wrestling Digital Hand-Held Urine Specific Gravity PEN Refractometer. I hoped it would be the right choice because it cost almost $400; it was the right decision. The cheaper ones needed solutions to calibrate them, and some warned about getting certain areas wet - when this is an instrument that is used in fluids! This one is very easy to use; has easy-to-read instructions; is comfortable to hold; uses only distilled water or even tap water to calibrate; (the only precaution was to make sure the water is at approximately the same temperature as the urine sample); the digital display is large and easy to read, and it came in a safe, secure snap-lock container with the PEN cradled in a foam box insert.

Overall an excellent product!

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