CLA-2-39:RR:NC:N2:237 C87802
TARIFF NO: 3906.90.5000; 3913.90.2050; 3914.00.6000
Mr. Michael V. Pascal
BioSepra Corporation
111 Locke Drive
Marlborough, MA 01752
RE: The classification of Ultragel AcA 54; Ultragel AcA202;
Ultragel AcA22; Ultragel AcA34; Ultragel AcA44; Ultragel A2;
Ultragel A4; Ultragel A6; DEAE Trisacryl M; and DEAE
Trisacryl LS from France.
Dear Mr. Pascal:
In your letter dated April 30, 1998 you requested a tariff
classification ruling of various filtration gels used in
chromatography for the separation of biological molecules based
on size.
Ultragel AcA54; and Ultragel AcA202 are each composed of a
mixed matrix of polyacrylamide and agarose which combine the high
resolution of polyacrylamide and the rigidity of agarose. In
each of these the polyacrylamide portion predominates over the
agarose.
The applicable subheading for Ultragel AcA54; and Ultragel
AcA202 will be 3906.90.5000, Harmonized Tariff Schedule of the
United States (HTSUS), which provides for acrylic polymers in
primary forms: other: other: other. The rate of duty is 4.2
percent ad valorem.
Ultragel AcA22; Ultragel AcA34; and Ultragel AcA44 are each
composed of a mixed matrix of polyacrylamide and agarose which
combine the high resolution of polyacrylamide and the rigidity of
agarose. Agarose is a polysaccharide gel that acts as a sieve.
In each of these, the agarose exists in equal or predominate
proportion to the polyacrylamide. Ultragel A2; Ultragel A4; and
Ultragel A6 are each composed of pure agarose.
The applicable subheading for Ultragel AcA22; Ultragel
AcA34; Ultragel AcA44; Ultragel A2; Ultragel A4; and Ultragel A6
will be 3913.90.2050, Harmonized Tariff Schedule of the United
States (HTSUS), which provides for natural polymers and modified
natural polymers not elsewhere specified or included, in primary
forms: polysaccharides and their derivatives: other. The rate of
duty is 5.8 percent ad valorem.
DEAE Trisacryl M is an ion-exchange resin synthesized by the
free radical copolymerization of a primary monomer, N-acryloyl-2-amino-2-hydroxymethyl-1,3-propanediol, and an anionic or cationic
monomer derivative. The primary monomer acts as a rigid
framework and the functional monomer assures the ion exchange
properties. The presence of three hydroxymethyl groups on each
primary monomer results in a high degree of hydrophilicity. This
prevents the denaturation of unstable biological molecules and
hydrophobic non-specific interactions which result in low
recoveries.
DEAE Trisacryl LS is ion-exchange resin synthesized by the
copolymerization of N-acryloyl-2-amino-2-hydroxymethyl-1,3-propanediol in the presence or absence of ionizable monomers,
according to the type of sorbent to be synthesized. This
chromatography support has a very high degree of hydrophilicity,
due to the presence of numerous hydroxymethyl groups which
entirely overlay the polymer structure. Trisacryl LS ion-exchangers have ionizable functional anionic (carboxyl or
sulfonate) or cationic groups (diethylaminoethyl).
The applicable subheading for all DEAE Trisacryl M and DEAE
Trisacryl LS will be 3914.00.6000, Harmonized Tariff Schedule of
the United States (HTSUS), which provides for ion-exchangers
based on polymers of headings 3901 to 3913, in primary forms:
other. The rate of duty is 3.9 percent ad valorem.
This ruling is being issued under the provisions of Part 177
of the Customs Regulations (19 C.F.R. 177).
A copy of the ruling or the control number indicated above
should be provided with the entry documents filed at the time
this merchandise is imported. If you have any questions regarding
the ruling, contact National Import Specialist F. Cantone at 212-466-5488.
Sincerely,
Robert B. Swierupski
Director,
National Commodity
Specialist Division