Elisabet Nuñez Gaitan

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colourblind dilutions series

Last week, when I visited a customer at their lab, I met a man who refused to perform serial dilutions in any other way than with tubes.
He was used to them and although it took a lot of time and effort to prepare them, he had worked like that for 10 years and had no intention of changing.

It turns out that when I showed him the Dilucup® System he got impressed:

-“It's clear that I could save a lot of time with Dilucup®” - he said. And he continued – “But I don't understand the colour code, what is it for?”

I explained that the red Dilucups were the ones that had been diluted and plated in the previous sample. The orange ones are those ready to be plated from the actual sample and the green ones those to be used in the next sample.

-“But I only see 2 different colours and I will get confused. I am colour-blind, you know, and this does not work for me.”

-“No problem” - I said.
Then I changed the colours.

He chuckled.

-“Wow, this changes everything. Now I can see the 3 colours!” - he said.

Read more about Dilugent Shaker
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Serielle verdünnungen Verdünnungsreihen diluizioni-seriali diluições em série seriefortynninger sarjalaimennokset rozcieńczenia seryjne raðþynningum seriële verdunningen Serijska razrjeđenja σειριακές αραιώσεις serielle-verdunnungen Serijska redčenja серијска разблажења sériová ředění Sériové riedenia серийни разреждания Cеријски разредувања

Click on the different links to read in your language how the Dilucup® System can help you improve serial dilutions.

Bulgarian
Cерийни разреждания

 Croatian
Serijska razrjeđenja

 Czech
Sériová ředění

 Dutch
Seriële verdunningen

 Finnish
Sarjalaimennokset

 German
Serielle verdünnungen
Verdünnungsreihen

 Greek
σειριακές αραιώσεις

 Hungarian
Sorozatos hígítások

 Icelandic
Raðþynningum

Italian
Diluizioni-seriali

 Japanese
連続希釈

 Korean
연속 희석

 Luxembourgish 
Serielle-verdunnungen

 Macedonian
Cеријски разредувања

 Norwegian
Seriefortynninger

 Polish
Rozcieńczenia seryjne

Portuguese
Diluições em série

 Romanian
Diluții în serie

 Serbian
Cеријска разблажења

 Slovak
Sériové riedenia

 Slovenian
Serijska redčenja

 Ukrainian
Cерійні розведення

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total count method

How to enumerate microorganisms in food products?

Total count method:

  1. Prepare the sample:
  • If it is solid: take a small quantity and homogenize it with a diluent so that you have a first dilution 1/10.
    For instance: 10 g of minced meat + 90 mL of MRD (Maximum Recovery Diluent).
  • If your sample is already liquid, skip this step.
  1. Perform serial dilutions with the Dilucup® System to reduce the concentration of microorganisms to a countable range.
  2. Plate and incubate: place 1 mL of the diluted suspensions on agar plates or equivalent and incubate them. This step will allow microorganisms to become visible colonies.
  3. Count the colonies after incubation. Plates should have between 30 and 300 Colony-Forming Units (CFU) to ensure statistical validity.
  4. Calculate the number of microorganisms per millilitre or gram in the original sample by dividing the number of CFU by the dilution factor.
    For example: 131 CFU / 10-2 = 1,31 x 104 CFU/g.

Enumerating microorganisms in food products is an essential analysis to ensure the quality of the product and its safety for consumption.

With the Dilucup® System you save a lot of time with serial dilutions and get accurate results.

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From all of us at LabRobot, we wish you a Merry Christmas and a Happy New Year 2025. Or as we say in Swedish, "God Jul och Gott Nytt År!"

We wish that the coming year brings you new opportunities and successes. And if you haven't yet tried our fantastic ready-to-use dilution cups, we encourage you to give them a try!

Happy Holidays!

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vortex mixer hand vibrations Dilucup

Have you ever observed the movements of a hand using a vortex mixer?

The constant vibrations that fingers, hand and wrist endure are really concerning, often resulting in repetitive strain injuries over time.
These injuries not only affect the well-being of the staff but can also lead to decreased productivity.

To address this issue, many laboratories are switching to the Dilucup® System.

This innovative solution features the Dilugent® Shaker which effectively absorbs all vibrations.
Users simply pipette from one cup to the next and wave their hand in front of the sensor to start the shaking.

Check it out in the video!

Feel free to contact us if you'd like to get a free demo.

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Reihenverdünnungen Serienverdünnungen verdünnungsreihen

Sparen Sie Zeit und Geld mit Ihren Verdünnungsreihen

Das Dilucup®-System hilft Ihnen, Ihren Prozess der Verdünnungsreihen zu standardisieren und die Effizienz zu steigern, wodurch einfache und präzise Mikroorganismenzählungen gewährleistet werden.

Serienverdünnungen
Verdünnungsreihe
Serielle Verdünnungen
Reihenverdünnungen

Mehr lesen
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Black Friday sale Dilugent

Order a Dilugent® Shaker Light or standard and get the higher version.

Limited offer until November 30, 2024.

Perfect opportunity to order the Pro version for the price of the standard one!

Contact us
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evolution dilushaker video

The first version of Dilushaker was just a humble laboratory shaker.
It was launched in 2001 and lacked sensors, so it could only be activated with the foot pedal. The only parameter that could be changed was the shaking time, which was limited to either 2 seconds or permanent.

In 2003, a second version was launched with a substantial improvement: a front optical sensor to activate the shaking. However, with this instrument, it was easy to make mistakes. Since the user had several cups open at once and there was no light indicating where to dilute, it was easy to accidentally dilute the same sample twice or skip a Dilucup®, for instance.

Thus, the need arose for users to have an indication of which cup they were diluting in. This is why, after five years, in 2008, a third version was launched. Dilushaker III revolutionized the market with a ramp of 3 or 6 LED lights (depending on the model) that indicated which Dilucup® to dilute. It had 3 different shaking speeds, could shake from 1 to 30 seconds and manage 1 to 12 dilutions. The light ramp indicated which column the Dilucup® to be diluted was in, and it could be programmed to work from left to right or vice versa.

Dilushaker III was a great success, which explains why it is still on sale today.

If you noticed in the video, Dilucup® has also evolved into what is now Dilucup® Elegance, but that is another story we will tell another day.

After 12 years more of innovation, the Dilugent® Shaker was launched. Unlike the previous versions, this instrument indicates you exactly where you are in the serial dilution process and has a lot of smart features that make it a sophisticated shaker.

Watch the video and see the remarkable improvement by yourself!

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serial dilutions with one hand

Recently, Marina faced a major challenge:
after an accident she had severe pain in her injured left arm
which made it almost impossible for her
to perform some of her daily tasks in the laboratory.

This was a problem because her colleagues were on vacation,
and no one could help her in the work for several weeks.

Luckily, she was perfectly capable of enumerating microorganisms
thanks to the Dilucup® System.

With Dilucup®, Marina could perform serial dilutions effortlessly.

The ergonomic design
allowed her to pipette comfortably just with one hand
and she used the footswitch to start the shaking,
so she didn't have to rely on her injured arm.

The Dilucup® System not only optimized her workflow
but also improved her quality of life.

If you or your team face similar challenges,
consider the Dilucup® System.
It's designed to make your work easier,
more efficient, and less physically demanding.