QUIZ: Refractometer Selection Guide

What enables the Rudolph J457 refractometer to reach precise temperature control up to 100°C? *

Infrared heating pads

Single-zone prism heating

Dual temperature control using a concave sample presser (CP option)

External water bath system

Why is the sapphire prism used in Rudolph refractometers superior to glass or YAG prisms? *

It is cheaper and easier to replace

It resists temperature fluctuations better

It is softer and easier to clean

It has a higher refractive index itself

Which industries specifically benefit from Rudolph’s wide RI range (1.26 to 1.72) and five-decimal-place accuracy? *

Automotive and textiles

Construction and agriculture

Pharmaceutical and flavor/fragrance industries

Mining and heavy equipment

What key feature makes Rudolph refractometers ideal for biological fluid analysis? *

Their automatic mixing capability

High-speed internet connectivity

Ultra-low volume measurement and high throughput

Ability to run 24/7 without recalibration

What is the primary reason petroleum industry users like ExxonMobil and SGS use Rudolph refractometers? *

They measure in Fahrenheit instead of Celsius

They comply with ASTM D1218 and D1747 temperature requirements

They operate only under vacuum conditions

They come preloaded with petroleum prices

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