The Big Bottle System is an accessory for the RAD8 and RAD7 that enables users to measure radon in 2.5L water samples with high sensitivity. The lower limit of detection is well below 1 pCi/L (40 Bq/m3) radon concentration in water. The upper operating limit is 10,000 pCi/L (400,000 Bq/m3). For ranges higher than that, the standard RAD H2O accessory is recommended.

The Big Bottle System consists of several components, including the Tubing Set, Support Stand, Elastic Clinching Strap, USB Temperature Logger, Hermetically Sealed Thermocouple, and two 2.5 L Glass Bottles. The tubing set includes a check valve, aerating stones, and aerator cap. A RAD8 or RAD7 is required, as is either a Laboratory Dryer or DRYSTIK.

The complete system (excluding the optional DRYSTIK), is portable and battery operated, and the measurement is moderately fast. Even for the lowest radon concentrations you can have an accurate reading of radon in the water within two hours of taking the sample.

The Big Bottle System gives results after 120 minutes of analysis, or less, with a sensitivity that far exceeds that of liquid scintillation methods. The method is simple and straightforward, and there are no harmful chemicals to use. Once the procedure becomes familiar and well understood it will produce accurate results with minimal effort.

Soda Bottle Aerator Kit Accessory

For added convenience and versatility, the Big Bottle System can be used with standard soda bottles of any size from 500ml to 2L. This configuration requires the Soda Bottle Aerator Kit accessory, which features an aerator system similar to that used with the standard 2.5L glass jug.

Larger bottles allow for greater precision and lower limits of detection. With a 500ml bottle, it is possible to measure comfortably down to below 5 pCi/L (200 Bq/m3). With a 2L bottle it becomes possible to measure down to 1 pCi/L (37 Bq/m3).

CAPTURE Software Integration

DURRIDGE’s CAPTURE software makes it easy to download and analyze data recorded using the Big Bottle System. The program provides controls for identifying the specific experiment configuration, and it automatically calculates radon concentrations with respect to the the specified water temperature and volumes. The software is free to use and is available for download here.

Big Bottle System Physical Specifications
Glass Bottle System Shipping Dimensions 17″ x 17″ x 17″ (43 cm x 43 cm x 43 cm)
Glass Bottle System Shipping Weight 11 pounds (5.0 kg)
Soda Bottle System Shipping Dimensions 14″ x 14″ x 14″ (36 cm x 36 cm x 36 cm)
Soda Bottle System Shipping Weight 5 pounds (2.3 kg)
Retort Stand Shipping Dimensions 37″ x 8″ x 2″ (94 cm x 20 cm x 5 cm)
Retort Stand Shipping Weight 6 pounds (2.7 kg)
Big Bottle System Kits

System kits are available for two sample size ranges. The Glass Bottle System is for 2.5L samples, and the Soda Bottle System is for smaller samples up to 2L. Each kit contains the necessary individual components, listed below.

DURRIDGE Glass Bottle System Contents
Glass Bottle System

Includes Retort Stand & Clamp, Tubing Set, Glass Jug Aerator Kit, (2) 2.5L glass jugs, and Temperature Logger Kit.

$940.00Add to cart

DURRIDGE Soda Bottle System Contents
Soda Bottle System

Includes Retort Stand & Clamp, Tubing Set, Soda Bottle Aerator Kit, and Temperature Logger Kit. Compatible with most 500ml-2L pressurized PET soda bottles.

$876.00Add to cart

Individual Components

The individual components are also available to purchase separately:

Big Bottle System Glass Jug Aerator Kit
Glass Jug Aerator Kit

Includes Screw-On Aerator Cap, Aerator Stones, and Check Valve

$225.00Add to cart

Big Bottle System Soda Bottle Aerator Kit
Soda Bottle Aerator Kit

Includes Screw-On Aerator Cap, Aerator Stone, and Check Valve

$213.00Add to cart

Retort Stand & Clamp
Retort Stand & Clamp

$144.00Add to cart

Big Bottle System Tubing Set
Big Bottle System Tubing Set

$159.00Add to cart

2.5L Glass Jug
2.5L Glass Jug

With Teflon lined cap

$26.00Add to cart

Temperature Logger Kit
Temperature Logger Kit

Includes USB Temperature Logger, Hermetically Sealed Thermocouple, and Elastic Clinching Strap with Foam

$360.00Add to cart

Temperature Probe
Omega Temperature Probe for Big Bottle System

Includes Hermetically Sealed Thermocouple without full Temperature Logger Kit

$130.00Add to cart

Laboratory Drying Unit
Laboratory Drying Unit

(Not included in Big Bottle System kits)

$144.00Add to cart

  • DURRIDGE Glass Bottle System
    Glass Bottle System with Aerator and Temperature Data Logger
  • DURRIDGE Soda Bottle Aerator Kit for the Big Bottle System
    DURRIDGE Soda Bottle Aerator Kit for the Big Bottle System

Big Bottle System Configuration PhotoBig Bottle System Configuration Photo

Big Bottle System Configuration Diagram
Big Bottle System Configuration Diagram


    Big Bottle System Manual (Aerator Cap Revision B, PDF)