US Returnable Containers

Pure-Pac^® and Pure-Pac^® II Returnable Containers^®

The Aldrich Pure-Pac® and Pure-Pac® II packaging/dispensing system provides a convenient method for storing and dispensing laboratory and development scale quantities of high purity solvents, fine organics, and other high hazard liquids. The properties of these products require the prevention of external contamination and/or personal exposure be kept to a minimum. Many of the liquids must be handled and stored without exposure to atmospheric moisture or oxygen.  Fortunately, the design of the Aldrich Pure-Pac® system allows ready and convenient transfer of these liquids.

Both the Pure-Pac® and Pure-Pac® II are constructed of 304 stainless steel.  Since this is a highly specialized, pressure rated container, a deposit is required upon purchase. Each container is stamped with a unique serial number, and a detailed individual history is maintained. If the container is returned empty and in good condition within six months by the purchaser, credit will then be issued for the deposit amount.

Pure-Pac^®

The Pure-Pac^® is FM Approved and the 200L,400L and 1250L containers are ASME Certified.

The Pure-Pac^® containers are available in four sizes: nominal capacity of 18, 200, 400, and 1250 liters.

• Technical Bulletin AL-201 (676 Kb PDF)

Specifications for the Pure-Pac® I Containers

	18L Pure-Pac	200L Pure-Pac	400L Pure-Pac	1250L Pure-Pac
Total capacity, (L)	20	230	438	1410
Working capacity, (L)	18	200	400	1250
UN Specification	UN1A1	UN1A1	UN1A1	31A/Y
ASME Code	N/A	Section VIII Div. 1	Section VIII Div. 1	Section VIII Div. 1
Maximum use pressure (psig)	10	15	15	45
Pressure relief (psig)	15	50	50	45
Maximum container pressure (psig)	100	50	50	45
Tare weight with valves (kg)	17	80	105	369
Shipping cube L x W x H (in)	13x13x22.5	28x28x57	28x28x64	45x45x76
Fork truck/forklift access	not included	included	included	included
Nitrogen inlet/vent fitting	3/8" ferrule lock	3/8" ferrule lock	3/8" ferrule lock	Swagelok QTM4 quick-coonect
Solvent outlet fitting	3/8" ferrule lock	1/2" ferrule lock	1/2" ferrule lock	Swagelok QTM8 quick-coonect
Nitrogen flushing port fitting	3/8" ferrule lock	1/2" ferrule lock	1/2" ferrule lock	N/A

Pure-Pac^® II

The Pure-Pac® II Returnable Container is designed to be used with lower pressure applications (< 1 bar). This container requires the use of a Micromatic MacroValve Coupler to dispense material. Click on the Accessories tab for more information on the Coupler and other acessories.

Pure-Pac^® II Coupler Configuration 
Pure-Pac^® II Accessories

The Pure-Pac^® II containers are available in three sizes: nominal capacity of 20, 50, and 200 liters.

• Technical Bulletin AL-236 (604 Kb PDF)

Specifications for the Pure-Pac® II Containers

	20L Pure-Pac II	50L Pure-Pac II	200L Pure-Pac II
Total capacity, (L)	22	55	220
Working capacity, (L)	20	50	200
UN Specification	UN1A1	UN1A1	UN1A1
Maximum use pressure (psig)	5	5	5
Pressure relief (psig)	12	12	12
Maximum container pressure (psig)	40	40	40
Tare weight with valves (kg)	7.3	14	45
Shipping cube L x W x H (in)	11x11x20	16x16x23	24x24x38
Nitrogen inlet/vent fitting	1/4" FNPT	1/4" FNPT	1/4" FNPT
Solvent outlet fitting	1" MNPT	1" MNPT	1" MNPT

Kilo-Lab^® Cylinders

The Kilo-Lab^® cylinder packaging system and transfer procedure provides a safe and convenient method for storing and dispensing development and pilot-plant scale quantities of high-hazard and air-sensitive liquids. It provides for minimal exposure of product to personnel and for no exposure of product to air.

Sigma-Aldrich has a complete cylinder maintenance program to ensure that each customer receives a cylinder in the best possible condition. The Kilo-Lab^® cylinder meets or exceeds all applicable shipping regulations.

Kilo-Lab^® cylinders are made of carbon steel and are available in four sizes: nominal capacity of 18, 90, 200, and 400 liters.

   Kilo-Lab^® Accessories
   Technical Bulletin AL-235 (538 Kb PDF)

	18L Kilo-Lab	90L Kilo-Lab	200L Kilo-Lab	400L Kilo-Lab
Total capacity, (L)	21	108	215.9	453.6
Working capacity, (L)	18	90	200	400
DOT Specification	4BA240	4BW240	4BW240	4BW240
Maximum use pressure (psig)	50	50	50	50
Pressure relief (psig)	200	150	150	150
Maximum container pressure (psig)	240	240	240	240
Tare weight (kg)	10	35	100	162
Shipping cube L x W x H (in)	12x12x19	15x15x50	28x28x47	30x30x58
Nitrogen inlet/ vent fitting	1/4" MNPT	1/4" MNPT	1/4" MNPT	1/4" MNPT
Solvent outlet fitting	CGA-510 (brass) CGA-350 (stainless steel)	CGA-350	CGA-350	CGA-350

NOWPak^®

The NOWPak^® II containers feature a precleaned, collapsible liner inside a returnable stainless steel container. The collapsible liner is constructed of a fluoropolymer in a cleanroom environment and are ideal for use with high purity solvents, HPLC mobile phase solutions and DNA reagents. The NOWPak^® II can be equipped with a pumping or pressure dispensing head.

The NOWPak^® II is designed for continuous pressure below 15 psig.

NOWPak Accessories

	20L	200L
Total capacity, (L)	20.7	206
Working capacity, (L)	20	200
UN Specification	UN1A1	UN1A2
Maximum use pressure (psig)	15	15
Pressure relief (psig)	15	15
Maximum container pressure (psig)	15	15
Tare weight with valves (kg)	7.5	44.7
Shipping cube L x W x H (in)	11.1 x 11.1 x 19.91	23.94 x 23.94 x 39.45
Fork truck/forklift access	Not included	Not included
Nitrogen inlet/vent fitting	1/4" or 1/2"	1/4" or 1/2"
Solvent outlet fitting	1/4" or 1/2"	1/4" or 1/2"

Accessories

Sigma-Aldrich offfers a broad range of fittings to increase the flexibility and ease of use for our returnable containers.

Pure-Pac II Accessories				Kilo-Lab Accessories				NOWPak Accessories
General Fittings (Double ferrule, pipe thread and hose barb)			Quick-Connect Fittings			Transfer Lines			Accessories

Products

High Purity Solvents

• Anhydrous
• Biotech
• CHROMASOLV^®, for HPLC
• CHROMASOLV^® Gradient Grade
• CHROMASOLV^® Plus
• Mobile Phase Solvents 

Cylinder Return Process

Sigma-Aldrich Returnable Containers are highly specialized pressure rated containers, that require a deposit due upon purchasing. This deposit will be refunded if all of the following conditions are met.

• Must be returned within 6 months of the date of shipping.
• Must contain only residual material (<1% of the original volume)
• Residue must be the product listed on the Sigma-Aldrich label on the container.
• Must be in good condition, with all valves in the closed position and all plugs or caps reapplied to valves. All product delivery apparatus must also be removed (I.e. transfer lines, syringes, etc.)
• No chemical residue can remain on the outside of the container.
• The Customer is responsible for any events that occur during the return transportation of this cylinder. Cylinders containing residue material must be shipped in accordance to the Transporation of Dangerous Goods Regulations.
• The Customer is responsible for all return freight charges.

Empty Returnable Containers should be sent to:

   Sigma-Aldrich Returns
   5485 County Road V
   Sheboygan Falls, WI 53085

The Customer may use the freight carrier of their choice for the return of these containers. If you do not have a preferred carrier, Sigma-Aldrich has partnered with Unishippers to provide an easy, straightforward process to return empty Pure-Pac^®, Kilo-Lab^®, and NOWPak^® II containers.

The Unishippers Concept:
The concept is simple: major carriers handle the pickup, transportation and delivery of your shipments, while providing customer service, competitive pricing and more choices than traditionally found elsewhere.

In 2 easy steps, you can have the empty containers picked-up and delivered back to Sigma-Aldrich.

1. Launch the Cylinder Return Program and fill in the easy to use online forms.
2. Contact Unishippers at (888) 744-7872 to schedule a pick-up.

Unishippers will help you save time, trouble and money on all of your shipment needs.
 

To find out which containers are eligible for return, contact Sigma-Aldrich Technical Services at (800) 231-8327.