Serial Diluter – evolution in sample dilution

In 2014, Inlabtec launched the Serial Diluter TA, the first serial diluter for serial microbiological sample dilution in bags (patented). This was followed by the Serial Diluter SA, which allows the use of pipette straws instead of 1 ml pipette tips. The Serial Diluter UA has been developed and launched due to the customer need to be able to freely use any type of pipette, including filtered pipette tips.

Serial Diluter UA

Connect the diluent and a 10 ml pipette, insert bags and start diluting! The new Serial Diluter UA with integrated mixer and intelligent process monitoring guarantees reliable and efficient dilution of samples for viable cell counts.
The procedure is 100 % identical to the ISO method – instead of pipetting into a test tube filled with 9 ml of Diluent, pipette into a filled bag. The Serial Diluter UA is available in six or twelve-stage versions.

Videos Serial Diluter UA
Serial Diluter UA: Demonstration of a 6-step serial dilution.
Other languages:

FR | IT | SP | J |

Serial Diluter UA12: Demonstration of a 12-step serial dilution.

Serial Diluter UA: Presentation and explanation of the internal system precautions to ensure process safety. Other languages:

FR | IT | SP | J |
Serial Diluter UA: Demo video of mixing technology.
Entertaining presentation of Serial Diluter UA from the IAFP 2019, Louisville KY, by Julien Pastor and Alexandra Ali, Kinematica USA.
Prices and scope of delivery Serial Diluter UA

The listed prices are in CHF excl. VAT and valid for Switzerland. In other countries, the prices of the respective distribution partner apply.

Part. No.DescriptionQuantityPrice
140000Serial Diluter UA complete, with bag mixer
incl. 1 x Tubing Set 100010, 1 x Dispensing Nozzle 140011, 1 x Connector Cap GL45 cpl 100020 , 1 x Bag Shell 100030, 1 x Serial Dilution Bags 100100, 1 x Power Adapter
15'819.50
150000Serial Diluter UA12 complete for 12 dilutions, with bag mixer
incl. 1 x Tubing Set 100010, 1 x Dispensing Nozzle UA12 150011, 1 x Connector Cap GL45 cpl 100020 , 1 x Bag Shell 100030, 1 x Serial Dilution Bags 100100, 1 x Power Adapter
18'394.50

Accessories
Part. No.DescriptionQuantityPrice
100010Tubing Set to Serial Diluter incl. two caps for pipette connection and intake hose, fully autoclavable
133.28
140011Dispensing Nozzle UA to Serial Diluter UA, PEEK and stainless steel, fully autoclavable
1182.-
150011Dispensing Nozzle UA12 to Serial Diluter UA12, PEEK and stainless steel, fully autoclavable
1202.80
100013Set of Caps and Pipette Connections, 5 x silicone caps for Connector Cap GL 45 cpl and intake hose of Tubing Set, 2 x pipette connections for Tubing Set incl. 2 x PVDF caps.
133.28
100014Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable
18.32
100015Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces
124.96
100017Tubing Set Twin, to Serial Diluter TA & UA, to connect two diluents, incl. 2x clamps, two caps for pipette connection and intake hose, fully autoclavable
149.92
100020Connector Cap GL 45 cpl, for the connection of diluent in GL 45 bottles to the Serial Diluter, with PTFE sterile filter 0.2 µm, Ø 25 mm for sterile pressure compensation, with 2 hose connections for 3 mm ID (inner diameter) in polyvinylidene fluoride (PVDF) , incl. 300 mm intake silicone hose, silicone cap, fully autoclavable
1124.80
100021Tubing Adapter, set of three, for the connection of diluent with supply of ID (inner diameter) 3 - 7 mm, incl. 60 mm silicone hose ID 6 mm, autoclavable
123.92
100030Bagshell, for storage of filled Serial Dilution Bags, PMMA
175.92
100031Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite

127.04
100032Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)

160.32
Specifications Serial Diluter UA
Number of dilution steps1 to max. 6 for UA
1 to max. 12 for UA12
Bag mixerPaddle type, stainless steel
Mixing time: adjustable 0. 5 s - 99 s
(factory setting: 3 s)
Compatible pipettesAll known 10 ml pipettes made ​​of glass or plastic
Max. systematic error at 9 mlDepends on the accuracy of the pipette used
± 0.1 % after calibration of the pipette used
± 0.5 % without calibration with pipette class A
± 0.8 % without calibration with pipette class B
± 2.0 % without calibration with plastic pipette
Max. random error at 9 ml± 0.5 %
Process time per dilution3 s (corresponds to the mixing time set)
Overall process speed including bag insertion and removal340 (-) 360 dilutions per hour
Interfaces/ connection sockets1 x USB socket for software updates
1 x connection socket optical sensor
1 x connection socket bag holde
1 x connection socket 24VDC power supply
Total weight UA4.9 kg
Total weight UA126.5 kg
Dimensions (W x H x D)Dispenser unit: 175 x 480 x 180 mm
Bag Holder: 430 x 150 x 120 mm
Bag Holder UA12: 430 x 200 x 280 mm
Mains voltage
100 - 230 V / 50 - 60 Hz
Signs power adapter
CE / CSA
Serial Diluter Demo Request

Are you interested in our serial diluter? Then send us your contact details. We will forward them to the distribution partner in your country. The responsible product specialist will contact you directly to arrange a demo appointment.

    Serial Diluter TA

    With the pioneer model Serial Diluter TA, the sample is placed in the bag together with the tip. The diluent then rinses the sample from the tip followed by a sterile air blast into the bag.
    This proven method works reliably with all samples examined in a food control laboratory. The Serial Diluter TA is also available in six or twelve stage versions.
    Please note that in contrast to the Serial Diluter UA, no pipette tips with filter can be used for diluting. The reason for this is that the diluent must flow unhindered through the pipette tip.

    Videos Serial Diluter TA
    Serial Diluter TA: Demonstration of a 6-step serial dilution.
    Serial Diluter TA12: Demonstration of a 12-step serial dilution.
    Serial Diluter TA: A sample containing particles makes the mixing process visible.
    Prices and scope of delivery Serial Diluter TA

    The listed prices are in CHF excl. VAT and valid for Switzerland. In other countries, the prices of the respective distribution partner apply.

    Part. No.DescriptionQuantityPrice
    100000Serial Diluter TA complete, for 1 ml standard tips
    incl. 1 x Tubing Set 100010, 1 x Dispensing Nozzle 100011, 1 x Connector Cap GL45 cpl 100020 , 1 x Bag Shell 100030, 1 x Serial Dilution Bags 100100, 1 x Power Adapter
    		14'995.50
    120000Serial Diluter TA12 complete for 12 dilutions, for 1 ml standard tips
    incl. 1 x Tubing Set 100010, 1 x Dispensing Nozzle 100011, 1 x Connector Cap GL45 cpl 100020 , 1 x Bag Shell 100030, 1 x Serial Dilution Bags 100100, 1 x Power Adapter
    		16'823.75

    Accessories
    Part. No.DescriptionQuantityPrice
    100010Tubing Set to Serial Diluter incl. two caps for pipette connection and intake hose, fully autoclavable
    		133.28
    100011Dispensing Nozzle to Serial Diluter TA for 1 ml standard tips, PVDF and stainless steel, fully autoclavable
    		1182.-
    120011Dispensing Nozzle TA12 to Serial Diluter TA 12 for standard tips, PEEK and stainless steel, fully autoclavable
    		1202.80
    100012O-Rings, spare part for Dispensing Nozzle TA and SA, 3 mm x 1 mm, silicone, conform to FDA 21CFR177.2600, autoclavable, set of 5 pieces

    		19.36
    100013Set of Caps and Pipette Connections, 5 x silicone caps for Connector Cap GL 45 cpl and intake hose of Tubing Set, 2 x pipette connections for Tubing Set incl. 2 x PVDF caps.
    		133.28
    100014Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable
    		18.32
    100015Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces
    		124.96
    100017Tubing Set Twin, to Serial Diluter TA & UA, to connect two diluents, incl. 2x clamps, two caps for pipette connection and intake hose, fully autoclavable
    		149.92
    100020Connector Cap GL 45 cpl, for the connection of diluent in GL 45 bottles to the Serial Diluter, with PTFE sterile filter 0.2 µm, Ø 25 mm for sterile pressure compensation, with 2 hose connections for 3 mm ID (inner diameter) in polyvinylidene fluoride (PVDF) , incl. 300 mm intake silicone hose, silicone cap, fully autoclavable
    		1124.80
    100021Tubing Adapter, set of three, for the connection of diluent with supply of ID (inner diameter) 3 - 7 mm, incl. 60 mm silicone hose ID 6 mm, autoclavable
    		123.92
    100030Bagshell, for storage of filled Serial Dilution Bags, PMMA
    		175.92
    100031Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite

    		127.04
    100032Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)

    		160.32
    Specifications Serial Diluter TA
    Number of dilution steps1 to max. 6
    1 to max. 12 for TA12
    Compatible pipettesAll known 10 ml pipettes made ​​of glass or plastic
    Max. systematic error at 9 mlDepends on the accuracy of the pipette used
    ± 0.1 % after calibration of the pipette used
    ± 0.5 % without calibration with pipette class A
    ± 0.8 % without calibration with pipette class B
    ± 2.0 % without calibration with plastic pipette
    Max. random error at 9 ml± 0.6 %
    Compatible pipette tipsAll known 1 ml pipette tips with a standard cone and lenght.
    To maximize process speed tips with a wide orifice/ opening/ etc. should be used.
    Process time per dilution< 4 s per dilution using LO Pipette Tips
    Overall process speed bag insertion and removal300 (-) 320 dilutions per hour
    Interfaces/ connection sockets1 x USB socket for software updates
    1 x connection socket optical sensor
    1 x connection socket bag holde
    1 x connection socket 24VDC power supply
    Total weight4.9 kg
    Total weight TA126.5 kg
    Dimensions (W x H x D)Dispenser unit: 175 x 480 x 180 mm
    Bag Holder: 430 x 150 x 120 mm
    Bag Holder TA12: 430 x 200 x 280 mm
    Mains voltage
    		100 - 230 V / 50 - 60 Hz
    Signs power adapterCE / CSA
    Serial Diluter Demo Request

    Are you interested in our serial diluter? Then send us your contact details. We will forward them to the distribution partner in your country. The responsible product specialist will contact you directly to arrange a demo appointment.

      «Unthinkable that test tubes are used again in our laboratory for dilutions. »

      Alexandra Dostal, Cantonal Laboratory of Thurgau, Frauenfeld, Switzerland

      Serial Diluter SA

      The method of operation is the same as with the Serial Diluter TA: Place the sample together with the straw tip into the first bag and attach the dosing arm for automatic dilution – it’s as simple as that! Like the Serial Diluter TA, the Diluent flows through the pipette straw for mixing and diluting.

      Videos Serial Diluter SA
      Serial Diluter SA: Demonstration of a 6-step serial dilution.
      Serial Diluter SA: A sample containing particles makes the mixing process visible.
      Prices and scope of delivery Serial Diluter SA

      The listed prices are in CHF excl. VAT and valid for Switzerland. In other countries, the prices of the respective distribution partner apply.

      Part. No.DescriptionQuantityPrice
      110000Serial Diluter SA complete, for pipette straws
      incl. 1 x Tubing Set Straw 110010, 1 x Dispensing Nozzle Straw 110011, 1 x Connector Cap GL45 cpl 100020 , 1 x Bag Shell 100030, 1 x Serial Dilution Bags 100100, 1 x Power Adapter
      		14'995.50

      Accessories
      Part. No.DescriptionQuantityPrice
      110010Tubing Set Straw to Serial Diluter SA incl. two caps for pipette connection and intake hose, fully autoclavable
      		133.28
      110011Dispensing Nozzle SA to Serial Diluter SA for pipette straws with inner Ø 4 mm , PEEK and stainless steel, fully autoclavable
      		1202.80
      110711Dispensing Nozzle SA to Serial Diluter SA for pipette straws type Socorex with inner Ø 3.8 mm , PEEK and stainless steel, fully autoclavable
      		1202.80
      100012O-Rings, spare part for Dispensing Nozzle TA and SA, 3 mm x 1 mm, silicone, conform to FDA 21CFR177.2600, autoclavable, set of 5 pieces

      		19.36
      100013Set of Caps and Pipette Connections, 5 x silicone caps for Connector Cap GL 45 cpl and intake hose of Tubing Set, 2 x pipette connections for Tubing Set incl. 2 x PVDF caps.
      		133.28
      100014Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable
      		18.32
      100015Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces
      		124.96
      100020Connector Cap GL 45 cpl, for the connection of diluent in GL 45 bottles to the Serial Diluter, with PTFE sterile filter 0.2 µm, Ø 25 mm for sterile pressure compensation, with 2 hose connections for 3 mm ID (inner diameter) in polyvinylidene fluoride (PVDF) , incl. 300 mm intake silicone hose, silicone cap, fully autoclavable
      		1124.80
      100021Tubing Adapter, set of three, for the connection of diluent with supply of ID (inner diameter) 3 - 7 mm, incl. 60 mm silicone hose ID 6 mm, autoclavable
      		123.92
      100030Bagshell, for storage of filled Serial Dilution Bags, PMMA
      		175.92
      100031Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite

      		127.04
      100032Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)

      		160.32
      Specifications Serial Diluter SA
      Number of dilution steps1 to max. 6
      Compatible pipettesAll known 10 ml pipettes made ​​of glass or plastic
      Max. systematic error at 9 mlDepends on the accuracy of the pipette used
      ± 0.1 % after calibration of the pipette used
      ± 0.5 % without calibration with pipette class A
      ± 0.8 % without calibration with pipette class B
      ± 2.0 % without calibration with plastic pipette
      Max. random error at 9 ml± 0.9 %
      SA: Compatible pipette strawsAll known pipette straws with a length between 160 and 220 mm
      Process time per dilution< 4 s per dilution
      Overall process speed bag insertion and removal300 (-) 320 dilutions per hour
      Interfaces/ connection sockets1 x USB socket for software updates
      1 x connection socket optical sensor
      1 x connection socket bag holde
      1 x connection socket 24VDC power supply
      Total weight4.9 kg
      Dimensions (W x H x D)Dispenser unit: 175 x 480 x 180 mm
      Bag Holder: 430 x 150 x 120 mm
      Mains voltage
      		100 - 230 V / 50 - 60 Hz
      Signs power adapterCE / CSA
      Serial Diluter Demo Request

      Are you interested in our serial diluter? Then send us your contact details. We will forward them to the distribution partner in your country. The responsible product specialist will contact you directly to arrange a demo appointment.

        «The Serial Diluter works perfectly and saves us a lot of work. We can no more imagine a step backwards to the dilution tubes. »

        Rainer Hofmann, SGS INSTITUT FRESENIUS GMBH, Freiburg, Germany

        More information on how to use our products can be found in Support.