
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
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.
Accessories | |||
Part. No. | Description | Quantity | Price |
100010 | Tubing Set to Serial Diluter incl. two caps for pipette connection and intake hose, fully autoclavable![]() | 1 | 33.28 |
140011 | Dispensing Nozzle UA to Serial Diluter UA, PEEK and stainless steel, fully autoclavable![]() | 1 | 182.- |
150011 | Dispensing Nozzle UA12 to Serial Diluter UA12, PEEK and stainless steel, fully autoclavable![]() | 1 | 202.80 |
100013 | Set 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.![]() | 1 | 33.28 |
100014 | Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable![]() | 1 | 8.32 |
100015 | Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces![]() | 1 | 24.96 |
100017 | Tubing Set Twin, to Serial Diluter TA & UA, to connect two diluents, incl. 2x clamps, two caps for pipette connection and intake hose, fully autoclavable![]() | 1 | 49.92 |
100020 | Connector 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![]() | 1 | 124.80 |
100021 | Tubing 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![]() | 1 | 23.92 |
100030 | Bagshell, for storage of filled Serial Dilution Bags, PMMA![]() | 1 | 75.92 |
100031 | Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite![]() | 1 | 27.04 |
100032 | Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)![]() | 1 | 60.32 |
Specifications Serial Diluter UA
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.
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.
Accessories | |||
Part. No. | Description | Quantity | Price |
100010 | Tubing Set to Serial Diluter incl. two caps for pipette connection and intake hose, fully autoclavable![]() | 1 | 33.28 |
100011 | Dispensing Nozzle to Serial Diluter TA for 1 ml standard tips, PVDF and stainless steel, fully autoclavable![]() | 1 | 182.- |
120011 | Dispensing Nozzle TA12 to Serial Diluter TA 12 for standard tips, PEEK and stainless steel, fully autoclavable![]() | 1 | 202.80 |
100012 | O-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![]() | 1 | 9.36 |
100013 | Set 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.![]() | 1 | 33.28 |
100014 | Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable![]() | 1 | 8.32 |
100015 | Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces![]() | 1 | 24.96 |
100017 | Tubing Set Twin, to Serial Diluter TA & UA, to connect two diluents, incl. 2x clamps, two caps for pipette connection and intake hose, fully autoclavable![]() | 1 | 49.92 |
100020 | Connector 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![]() | 1 | 124.80 |
100021 | Tubing 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![]() | 1 | 23.92 |
100030 | Bagshell, for storage of filled Serial Dilution Bags, PMMA![]() | 1 | 75.92 |
100031 | Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite![]() | 1 | 27.04 |
100032 | Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)![]() | 1 | 60.32 |
Specifications Serial Diluter TA
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.
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. | Description | Quantity | Price |
110000 | Serial 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 ![]() | 1 | 4'995.50 |
Accessories | |||
Part. No. | Description | Quantity | Price |
110010 | Tubing Set Straw to Serial Diluter SA incl. two caps for pipette connection and intake hose, fully autoclavable![]() | 1 | 33.28 |
110011 | Dispensing Nozzle SA to Serial Diluter SA for pipette straws with inner Ø 4 mm , PEEK and stainless steel, fully autoclavable![]() | 1 | 202.80 |
110711 | Dispensing Nozzle SA to Serial Diluter SA for pipette straws type Socorex with inner Ø 3.8 mm , PEEK and stainless steel, fully autoclavable![]() | 1 | 202.80 |
100012 | O-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![]() | 1 | 9.36 |
100013 | Set 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.![]() | 1 | 33.28 |
100014 | Syringe Filter, Ø25 mm, to Serial Diluter and Connector Cap GL 45, PTFE membrane, hydrophobic, about eight times autoclavable![]() | 1 | 8.32 |
100015 | Adhesion Gripper to Bag Holder, 4 mm x 370 mm, self-adhesive, with mounting instructions, set of 2 pieces![]() | 1 | 24.96 |
100020 | Connector 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![]() | 1 | 124.80 |
100021 | Tubing 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![]() | 1 | 23.92 |
100030 | Bagshell, for storage of filled Serial Dilution Bags, PMMA![]() | 1 | 75.92 |
100031 | Bagshell Rocker, for tilting a Bagshell for sampling out of Homogenizer Bags, PMMA anthracite![]() | 1 | 27.04 |
100032 | Bagshell Panel, for sampling out of Serial Dilution Bags in a Bagshell, PMMA (Picture show a Bagshell and a Bagshell Panel)![]() | 1 | 60.32 |
Specifications Serial Diluter SA
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.