Filter Bags are suited for laboratory blenders and mixers.

Press Release Summary:

Designed for laboratory food and solid sample blenders and mixers including BagMixer® and Gravimat®, BagFilter line of reinforced, heavy-duty plastic bags incorporate nonwoven filter that separates bacterial flora from residual debris and provides pipeting. They ensure complete security and are available in BagFilter®, BagPage®, BagPage+® and BagLight® configurations. Single-use, sterilized filter bags are available in 100, 400, or 3,500 ml sizes.

Original Press Release:

Spiral Biotech Offers 1st High-Performance Filter Bags for Laboratory

NORWOOD, MASSACHUSETTS - April 30, 2007 - Advanced Instruments' subsidiary, Spiral Biotech, offers the first high-performance filter bags for laboratory food and solid sample blenders and mixers.

Spiral Biotech's BagFilter line of reinforced, heavy-duty plastic bags incorporates a
unique nonwoven filter that separates bacterial flora from residual debris and
provides easier and quicker pipeting. The single-use, sterilized bags ensure greater
time savings with complete security.

Spiral's BagFilter family is available in the following configurations:
BagFilter® - With a nonwoven filter, this bag is recommended for analysis of
raw and cooked meat, fish, vegetables, and fruit. Two models are available:
"P" for pipeting and "S" for pouring.

BagPage® - This bag ensures savings in analysis time by trapping sample
debris behind the clog-free filter membrane. It's ideally suited for thick pasty
products, such as cheese, pastry, and chocolate.

BagPage+® - The bag has two compartments separated by the filter. One
side is marked to identify the sample compartment, the other pinched by an
extra weld for error-free pipeting.

BagLight® - A sturdy plain bag for products that don't require filtration. Made
from Polysilk®, the container is remarkably resilient and can be deep frozen.

BagFilter products are available in 100 ml, 400 ml or 3500 ml sizes. Designed for
use in Spiral's industry-leading BagMixer® and Gravimat® sample preparation
systems, they also work with any other type of blender.

Spiral's BagFilter products provide the quickest way to enhance a laboratory's
sample mixer performance.

Spiral is offering a free 10-bag sample pack of its 400 ml BagPage. For more
information, on the Web, go to:

Spiral Biotech's BagFilter high performance filter bags are immediately available.
Orders received by July 31, 2007 are eligible for a 25% discount. For more
information, call (800) 554-1620 or +1(781) 320-9000.

About Advanced Instruments and Spiral Biotech

Founded in 1955, Advanced Instruments, Inc. is the world's largest supplier of
freezing-point osmometers used in clinical, pharmaceutical, and biotechnology
laboratories. The company is also a leading supplier of analytical instruments and
test kits for the food, dairy, and industrial microbiology markets. Based in Norwood,
Massachusetts, USA, the company also produces Fiske® Associates brand diagnostic
instruments and operates Spiral Biotech, Inc., and Delta Instruments as wholly-
owned subsidiaries.

For nearly 30 years, Spiral Biotech, Inc. has developed and supported automated
microbiology systems for food, dairy, and environmental sciences. The company is a
wholly-owned subsidiary of Advanced Instruments, Inc., the world's leading
manufacturer of freezing-point osmometers for clinical and research applications.
Visit Spiral Biotech online at

Advanced Instruments' products are supported by a worldwide network of direct
sales people and independent distributors. Reach Advanced Instruments online at or contact customer service at 800-225-4034 or+1-781-320-

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