Materials Specifications


Introduction

All of the materials from which BetterBottle carboys, and fittings are made have been carefully selected and tested. All are approved for food and beverage use by the FDA and/or NSF (see below).


Suggested Uses -

BetterBottle carboys and fittings are primarily intended for use with fluid mixtures or solutions that would generally be considered potable (e.g., wine, beer, distilled spirits, juices, teas, water etc.). BetterBottle carboys, plain or equipped with fittings, function extremely well as fermenters or as containers for potable water. The carboys and fittings can be washed and sanitized with aqueous solutions of the washing and sanitizing agents commonly used in winemaking, brewing, and home dish washing, provided recommended concentrations and contact times are observed (see the Wash/Sanitize tab at the left of this page).

Materials Listing

BetterBottle Materials Listing
Materials

Items

Approval

Temperature Limits For Items
Working

Washing

PET - nominally amorphous
(Clear)

Bottle bodies FDA

Kosher
statement

-30 to 60C
-22 to 140F
see low temp footnote1
<60 C (<140F)2
PET - nominally crystalline
(Opaque)

Racking Adapter (body & nut)
Pail Adapter (body & nut)
SimpleFlo valve
PET Closures
Closure Plug
Closure Adapters
DryTrap

FDA -20 to 75C
-4 to 167F
see low temp footnote1
<75 C (<167F)2
Teflon (PTFE) Racking Adapter Slip Washers
Pail Adapter Slip Washer
FDA -40 to 200C
-40 to 400F


OK to Boil
Teflon (FEP)-Encapsulated
Viton


Racking Adapter body O-ring
PET Closure large O-ring

FDA -26 to 200C
-15 to 400F
OK to Boil
Viton SimpleFlo Valve O-rings
Pail Adapter body O-ring
PET Closure small O-ring
DryTrap O-ring
Racking Adapter lock O-ring
Pail Adapter lock O-ring

FDA -26 to 200C
-15 to 400F
OK to Boil
Buna-N
(replaced with Viton 1st Qtr of 2009)
Racking Adapter lock O-ring
Pail Adapter lock O-ring

FDA
or
NSF

-40 to 120C
-40 to 250F
OK to Boil
PET-Lined polyolefin tubing Outer layer of Bev-Seal Ultra PET-lined tubing
NSF -30 to 60C
-22 to 140F

<60 C (<140F)2
High-Density Polyethylene (HDPE) Funnel
NSF -40 to 120C
-40 to 250F

OK to Boil
Polypropylene (PP) Closure Fittings hose barbs FDA -40 to 135C
-40 to 275F

OK to Boil
302 & 316 Stainless DryTrap retainer & clip
SimpleFlo valve ring & clip

NSF N/A OK to Boil
Borosilicate Glass DryTrap ball NSF N/A OK to Boil

1 PET becomes somewhat brittle at very low temperatures.
2 Refer to the Clean/Sanitize tab at the left side of this page for details regarding safe water temperatures.



Avoid Certain Chemicals -

The special PETs used to make BetterBottle carboys and fittings are extremely resistant to chemical damage. However, there are some chemicals that can damage them, just as there are some chemicals that can damage most other materials used in winemaking and brewing (e.g., glass, stainless steel, rubber, vinyl, nylon, polystyrene, acetal, polyolefins (PE, HDPE, PP) etc.).1,2 In general, contact with concentrated aliphatic ketones (e.g., essence oils) should be avoided and contact with strong caustics, including caustic detergents, should be minimized (see the Wash/Sanitize tab at the left of this page). The following table of chemicals that are known to damage BetterBottle carboys and the components of BetterBottle fittings is intended only to highlight those chemicals that are especially likely to be encountered by winemakers and brewers. It is not intended as comprehensive list. For more complete data regarding chemical resistance see the references cited below.1-6 Suitability for particular application that is not specifically recommended by BetterBottle must be carefully determined by responsible persons, who are familiar with the science of plastic materials, state and federal regulations, and the particular application.

Note: Though not recommended as storage containers for concentrated alcohols, because alcohols are flammable, it is worth noting that BetterBottle carboys are very resistant to alcohols, such as methanol, ethanol, and iso-propanol. If a BetterBottle carboy has been labeled using a magic marker type of pen, the writing can be removed using one of these alcohols.

Short Table Of Common Chemicals To Avoid
Chemical
%
Conc.


Temp
C


PET
(Carboys)

PET
(Fittings)

Viton
Teflon
(FEP & PTFE)
HDPE / LDPE
PP
Acetic Acid 5-6

15-25

Slow Deterioration

Slow Deterioration

Slow Deterioration

OK

OK

OK

Hydrochloric Acid

10

15-25

Slow Deterioration

Slow Deterioration

OK

OK

OK

OK

Ketones (Aliphatic)

80

15-25

Rapid Damage

Damaged

Damaged

OK

Damaged

Slow Deterioration

Ammonium hydroxide

6

15-25

Slow Deterioration

Slow Deterioration

Slow Deterioration

OK

OK

OK

Potassium hydroxide

10

15-25

Damaged

Damaged

Slow Deterioration

OK

OK

OK

Sodium hydroxide

10

15-25

Damaged

Damaged

Slow Deterioration

OK

OK

OK


1 Cole-Parmer - Chemical Resistance Data Base (Accessed 09/15/2011)
2 Nalgene Labware - General Chemical Resistance Data Base (Accessed 09/15/2011)
Southeastern Automation, Inc. - Rosemount Analytical Division - Chemical Resistance Chart (Accessed 09/15/2011)
Harrington Industrial Plastics, LLC - Chemical Resistance Guide (Accessed 09/15/2011)
5 Apple Rubber Products - Chemical Compatibility (Accessed 09/15/2011)
6 Moskala,E.J. and Jones, M. Evaluating Environmental Stress Cracking of Medical Plastics. Medical Plastics and Biomaterials. May, 1998 (Accessed 09/15/2011)


Avoid Certain Handling -

BetterBottle carboys are incredibly durable (See the Durability tab to the left of this screen), because they have been carefully designed and the special PET used to make them has amazing tensile strength and resistance to flex fatigue. Because they are so durable, It is tempting to aerate or de-gas by vigorously rocking or swirling filled carboys. If this is done on a solid surface, with the carboys vertical, the PET around the edge of the bottom will be flexed into temporary, but deep, wrinkles that will stress the PET unnecessarily and may eventually cause cracks to develop. See the How-To Tips section, under the Product Information tab at the top of this page for suggested methods for rocking and swirling.