RITTER Biogas Batch Fermentation System BBFS-18 (Standard)

Table of Contents

Basic Elements BBFS-18

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  • Suitable for max. 18 x 0.5 / 1.0 / 2.0 ltr PMMA Fermentation Bottles
  • Air circulation by 2 powerful fans for homogeneous heat distribution
  • Control panel with LCD display for digital temperature setting, increment 1°C
  • Integrated mainboard for operation of stirring units
  • RJ12 interface for bus line to the »SIM« signal interface module for controlling the oven temperature and speed/interval operation of the stirring devices (with RIGAMO V4.x)
Dimensions W 750 mm x D 750 mm x H 300 mm Weight 39.0 kg
* Mounting space for rear cable connections: +50 mm
Read MoreHeating Oven Type BBFS-18
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  • Suitable for simple and compact installation of max. 18 MilliGascounters and 18 optional CO2 absorption bottles
  • Frame made of aluminium, shelves made of stainless steel 1.4571
Rack for BBFS-18 Dimensions W 810 mm x D 370 mm x H 950 mm Weight 13.5 Kg
Read MoreRack for BBFS-18
Roller Table for Heating Oven BBFS-9 & BBFS-18


  • Wheeled table for setting up the heating oven for fermentation system BBFS-18
  • Total height incl. standing heating oven = standard height laboratory tables (920 mm)


  • Table frame with 4 lockable wheels
  • 1 additional storage compartment below the heating oven
  • Suitable for holding the movable rack for the installation of MilliGascounters and absorption bottles


  • Frame made of aluminium profiles, table plates made of PE-blue
Table for BBFS-18 Dimensions W 820 mm x D 720 mm x H 620 mm
The illustration shows the tables with the ovens in place with the rack for MilliGascounters and CO2 absorption bottles. The rack can be moved forward/backward for easy installation and handling of the MilliGascounters and CO2 absorption bottles. The gas sampling bags (option) can be attached to the horizontal aluminium profiles.
Read MoreRoller Table for Heating Oven BBFS-18 (Option)
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Feature highlights

  • Absolute gas-tight by magnetic coupling between stirring motor and stirring blade
  • Various bottle sizes: 0.5 / 1 / 2 ltr – custom sizes on request
  • High breaking strength by PMMA material (no fragile glass gas outlet nozzle)
  • Custom stirring blades available

Technical Data

  • Stirring speed adjustable from 1 to 30 r/min *
  • Interval stirring with freely selectable interval times *
  • Suitable for media with low and high viscosity (≤ 450 mm2/sec)
  • Temperature range: 10 – 55 °C
  • Max. pressure: 100 mbar
  • Material fermentation bottle: PMMA crystal-clear
  • 2 connection ports: 1 x gas outlet, 1 x purging of heads space or sample taking, PVDF screw-type tube connection for tube Øi 4 mm, Øo 6 mm

* with »RIGAMO« V4.x software

Read MorePMMA Fermentation Bottle with Stirring device
HXXO20200630211310PE 1600

Type: MGC-1 PMMA / Material: Casing PMMA, measurement cell PVDF

  • Measuring range: 1 ml/h to 1 ltr/h
  • Measuring accuracy: ±3% across the whole flow rate range (better ±1% with »RIGAMO« software by dynamic correction of measurement errors)
  • Including individual calibration certificate
  • Volume measurement cell: 3 ml
  • Equipment: Digital display, 200 ml packing liquid, 1.5 m connection tube, cleaning tool, syringe and bubble level (1 piece each for up to max. 5 pc.)
  • Resolution (= min. measurement increment): 3 ml
  • Max. operating temperature 60 °C
  • Max. overpressure: 100 mbar
PMMA / PVDF Dimensions ø 96 mm x H 112 mm Weight 475 g

For a detailed description see RITTER MilliGascounters and data sheet »MilliGascounter MGC-1 PMMA«.

Read MoreMGC-1 PMMA
HXXO20201129105713PE 1920


  • Types: 1-/3-/9-/18-Channel
  • Central interface module for RITTER Biogas Batch Fermentation System BBFS V4.x


  • Data transmission of gas volume and temperature of a RITTER Gas Meter
  • Normalisation (temperature and pressure compensation) of gas volume and volume flow
  • Data transmission for temperature control of the Heating Oven
  • Data transmission for stirrer control of the Fermentation Bottles
  • Conversion of data into USB signals for connection to PC
Read MoreSignal Interface Module (»SIM«)

Components for CO2 Absorption (Option)

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Absorption solution

  • 3-molar caustic potash solution (KOH 3 mol/ltr in aqua dest.)
  • Filling quantity per absorption bottle: 250 ml
  • Delivery in bottles of 1 ltr
Please note: Due to transportation restrictions, the absorption solution might has to be purchased locally. Please contact RITTER.
Read MoreAbsorption solution

More Options

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  • 1 x Connection for gas outlet port, PVDF screw-type tube connection  øi 4 mm, øo 6 mm
  • 1 x Connection for flushing of headspace or sample extraction, PVDF screw-type tube connection øi 4 mm, øo 6 mm
  • Various bottle sizes: 0.5 / 1 / 2 ltr - custom sizes on request
  •  High breaking strength due to PMMA material (without fragile glass gas outlet nozzle)
0.5 ltr Dimensions ø H 110 mm x D 105 mm Weight 0.25 kg
1.0 ltr Dimensions ø H 190 mm x D 105 mm Weight 0.4 kg
2.0 ltr Dimensions ø H 350 mm x D 105 mm Weight 0.7 kg
Read MorePMMA Fermentation Bottle without Stirring Device
Stirring device for RITTER PMMA fermentation bottles
  • Incl. magnetic coupling for absolute gas tightness of fermentation bottle
  • With intervalic stirring (1 min / 1 min)
  • Suitable for media with low and high viscosity ≤ 450 mm²/sec (≙ 65 sec capillary flow cup 6 mm DIN EN ISO 2431)
  • Step motor 2 ampere, 15 rpm
  • Custom stirring blades available
0.5 ltr Dimensions of stirring blade W 80 mm x H 45 mm Weight ~ 0.7 kg
1.0 ltr Dimensions of stirring blade W 80 mm x H 125 mm Weight ~ 0.7 kg
2.0 ltr Dimensions of stirring blade W 80 mm x H 285 mm Weight ~ 0.7 kg
Read MoreStirring Device for RITTER PMMA Fermentation Bottles

Small Parts (always included)

RITTER Check valve with 2 tube nozzles

Check valve with 2 tube nozzles

  • 1 check valve per MilliGascounter
  • Incl. tube nozzles for tube øi 4 mm / øo 6 mm
  • Materials: Housing PC, valve body Silicone, tube nozzles Polypropylene
  • Function: Prevents reverse flow* of …
    • … packing liquid into Fermentation Bottle when used with MilliGascounter
    • … absorption liquid into Fermentation Bottle when used with CO2 Absorption Bottle
  • Easy mounting in tubing behind filter and in front of MilliGascounter
* Reverse flow may be caused due to an underpressure in the Fermentation Bottle for example by a decrease of temperature in the bottle.
Read MoreCheck valve with 2 tube nozzles

Gas Analysis (Option)

RITTER BBFS+ Gas Analysis

»MultiGas« Sensors for BBFS-9 & BBFS-18

The RITTER Biogas Batch Fermentation System »BBFS« allows the world-wide unique combination of:

  • … biogas fermentation tests
  • … data acquisition of volume and flow rate
  • … gas analysis of CH4 and CO2 as an option

… from up to 18 gas sources.

For this purpose, 9 high-precision RITTER »MultiGas« NDIR (non-dispersive infrared) Sensors are installed in one casing. Up to 2 casings can be attached to the rack of the BBFS.

These sensors provide the gas analysis of biogas (and many other gases) used in R&D labs. This sophisticated technology in combination with the RITTER Biogas Batch Fermentation Systems BBFS-9 and BBFS-18 allows the exact analysis of biogas from up to 18 fermentation bottles. It is a powerful tool for evaluation of biogas fermentation science.

Please use the »MultiGas« Sensors Checklist to receive a customised solution to your measurement and gas analysis requirements:

Read More»MultiGas« Sensors for BBFS-9 & BBFS-18