The correct answer is 25 hours.

We wish him always best insight with his new fine stereo microscope and its long-lasting battery!

No, don’t worry… we’re just counting every item. The annual stocktaking.
 

That’s what we thought when we were offered to buy back this spectrophotometer (Kirchhoff-Bunsen principle). The estimated year of manufacture is 1908. After more than 100 years of duty, the spectrophotometer is now retired and allowed to spend the rest of its days safe and sound in a glass cabinet in our Krüss museum.

If you feel like, browse a bit through our company’s history.

We are very proud of our Polarimeter P8000 – because it’s the fastest polarimeter worldwide! Krüss developed a high-speed measurement that reduces measuring time to just 1 second – with high precision, irrespective of the angle of the sample.

The Polarimeter P3000 operates just as fast as its big brother. This means that you’ll get the same speed for a reduced price. An intuitive touch screen with basic functions has been implemented as well.

For industries – i.e. sugar industry – that don’t need more than 2 digits after the decimal point and perform standardized measurings, the P3000 is exzellent value for money!

You’d like to know more?
Ask us, we’re happy to help!

We’d really appreciate it, when you use it while telling others about our fine laboratory products!

Q: … But how do I type it?

A: … That’s easy!

In Windows, combinations of the ALT key plus a numeric code can be used to type a non-English character (accented letter or punctuation symbol) in any Windows application.

So in Windows you can simply use codes:
Typing Alt+0220 gives the capital “Ü”
typing ALT+0252 gives the small “ü”.

Generally useful:
The Windows Character Map (charmap.exe) shows the codes for characters.

In Mac OS X you can do the following:
Make sure you have the option “Show Keyboard & Character Viewer in menu bar” checked.
Select “Show/Hide Character Viewer” from the menu bar.
Select “Accented Latin” from the category list.
Select the desired character. (A double click on the character will insert it into the current application).
You can add often used characters as your favorites.

Or try hitting “Alt-U”, then the character you want.

Thank you for trying
and keeping Krüss as it’s supposed to be!

ASTM D1747 for Refractive Index of Viscous Materials.

Refractive index is a fundamental physical property that can be used in conjunction with other properties to characterize pure hydrocarbons and their mixtures.
The use of refractive index in correlative methods for the determination of the gross composition of viscous oils and waxes often requires its measurement at elevated temperatures.

ASTM D5006 for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels.

DiEGME is miscible with water and can be readily extracted from the fuel by contact with water during shipping and in storage. Methods are therefore needed to check the additive content in the fuel to ensure proper additive concentration in the aircraft.

Please get in touch with us, if you wish further information about these standards or would like to know if our refractometers meet the requirements for your area of application.

Read more about the history of A.KRÜSS Optronic.

Ranging from low-cost compact models for general usage, to professional expandable devices for more challenging applications, our microscopes serve any purpose.

We are glad to offer this improvement of service to our clients. You should benefit from our long lasting expert knowledge and the quality of our instruments!

KRÜSS instruments are performing as real global players!

Formula Foods at the FoodPro in Sydney

Spotlight on our sturdy, robust ‘speedway star’, the KRÜSS DR101-60, testing methanol at the speedway league ‘Elitserien’ in Vetlanda, Sweden. Measurement is done by calibrating the device with methanol instead of water. Any contamination of methanol will be shown as an increase of the refractive index.

Conny Samuelsson (FIM/SVEMO) took the probes. He was an active speedracer during 1968-1985 and vice world champion in Inzell, 1977.

We thank Bjoern Schumann (Otmar Knebel GmbH) for the report and photos.