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Mail the coupon below for your free flyertelling how OATS can
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Organization Department
* Address
| City State/Province Zip/Postal CodeIICountry (Area Code)
Telephone Number II2 me cV92 liSI iU[) Institute for Scientific
Information® 29-27093501 Market Street, University City Science
Center, Philadelphia, PA 19104 U.S.A. ,Telephone: (215) 386-0100,
Cable: SCINFO, |Telex: 84-5305. European Office: 132 High Street,
Uxbridge, Middlesex, U.K. Telephone: Uxbridge 30085, Telex:
933693
Lm_m_m____mm_mm_mm-_-_-_-_-_-_m_mmmm_m-_-m_-__-_19 MARCH 1982
1455~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
19 MARCH 1982 1455
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Vega bricustom DolJust a year ago, finding a source forcustom
polynucleotide synthesis waslike trying to change lead into
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need.but we can supply them quicklyand at excellent prices. Vega is
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Vega produces custom polynu-cleotides by solid phase
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Polynucleotide Synthe-
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IgiucIeotide synthesisout of the dark ages.sizer. Because we
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and prices available. Weschedule the custom synthesis uponreceipt
of your order, and give you afirm delivery date. You receivea fully
purified and sequencedpolynucleotide that meets our rigidstandards
for quality assurance. Callus toll free at 1-800-528-4882 for
aquotation on any length of nucleotideup to an entire gene.
To receive a free poster of theabove illustration, just send us
yourname and address.
vega biochemicalsDivision of Vega Biotechnologies, Inc.Post
Office Box 11648Tucson, Arizona 85734Telephone: (602)
746-1401Telex: 165572 (VEGA BIO TUC)Circle No. 190 on Readers'
Service Card
41Ap,
-
Nalgene 500mLNew, larger upperlets you filter 500 rwith just one
fill. Ifor filtration (cold)sterilization.
expanded line otfNalgene
s and accessories1 1vrnmaKeyourworn
New Pressure Ada and Filter Cap.Permits use ofboth e 115-mIL
Filter Unitsin a closed positve system to
- êliminate the pro es that go with vacuumUnit. ~ on of
proteinaceous materials.cnamnnLdeal~
II
I.i
f
(i"
New Syringe Filter. _Two-way filtrationfor small volumes.
Ifyou've ever used our proven Type S sterilization filterunits,
you'll know why others just don't compare. There'sno time wasted in
preparaton because Nalgene filters arepre-assembled, pre-stenlized
and disposable.Now, we've added new filters and accessories that
will
save you more time and make your work easier.And you can order
any Nalgene
filter or accessory from a singlesource, your labware dealer.
Another
New Membrane Filters.Available in two materials, six
porosities. Pre-filter now availableseparately to fit any
Nalgene sterilization unit.
way Nalgene filter products can save you time and money.
Free We have new analytical filterware, too.For full details,
ask for our latest Nalgene filterwareliterature. Contact your
labware dealeT, or circle theReader Service Number Nalge
Company,
Nalgene Labware Department,~~365, Rochestei;Nalge New York
14602.
Circle No. 329 on Readers' Service Card
Nalgene filter products are ixtended for use only. Not for in
vitv peterals.
.1
Type S Filter Unit,115mL
~-7 iNew In-linej _ Filter Holders
-,,"
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OnlyAccumet has it:a special switch with areference position
that letsyou check or restore calibration inseconds. Without
buffers. Flick itup to the pH REF position aftereach calibration.
Make a note ofthe specific reference number forthat calibration -
you'll see it dis-played on the meter. That's it.Now you can check
or recover
calibration at any time. Simply flipour switch to pH REF. And
twist thestandardization knob till the correctreference
numberappears. Presto!You're recalibrated. e
Even betterin many routineapplications, you can calibrate fora
whole seres of pH ranges. Evenwith different electrodes, oneright
after the other. You merelynote the control settings and ref-erence
number for each range andelectrode you calibrate.
Then shift ranges or substituteelectrodes in seconds. No
buffers,
no beakers. Just flip the switchand turn the knobs to the
settings
and reference numberfor the specific cali-bration at hand.
It's a truly uniquefeature, available on 5Accumet models. Andit
could save you hoursof time, mountains of
beakers and liters of buffers.
With accu-
( > ~~~~racy thhat'sadequate formost routine
pH testing.Accumet improves accuracy in
lots of other ways, too. Automaticpolarity switching.
Top-mountedinputs. A TEST switch to check metercircuitry. And a
handy base that tiltsto any angle, mounts on a wall orunder a shelf
for easy viewing.Want to know more? Use the replycard number below
to receive anew, comprehensive bulletin. Orcall (412) 562-8543.
Fisher Scientific
AccumetO pH Meters mean accurate measurement.Circle No. 289 on
Readers' Service Card
we -I I I It6]
7-7iil-! 7Fr7;,..
f .- tllw.'t w
INRC ,7..*,4k* f %.
I:Z,.l .&
I
-
If an EppendorfPipette Couldpipette a sampleup to 48
timesumA&!_. ., in ZEE3.wEL1uLx raimiit WOUld looklike
thiS.
Imagine an Eppendorf Pipette that dispenses upto 48 times
without refilling.
Imagine a pipette that makes serial pipetting at1-second
intervals as easy as pressing a small lever.
Imagine a pipette that eliminates cleaning, contamina-tion and
carry-over error problems with interchangeableCombitips,*
disposable plastic sample reservoirsavailable in 3 sizes (0.5, 2.5
and 12.5ml capacity).
Imagine a pipette with foolproof 'click-set' volume adjust-ment
dial to select among 5 volume increments for each sizeCombitip,
giving you a choice of 13 different volumes from 10 to1,250,u1.
Only one pipette can do all this with traditionalEppendorf
accuracy, precision and operating ease. OnlyEppendorf makes
it...The Repeater, the new repetitivepipette with disposable
Combitips.
For literature, write: Eppendorf Division, BrinkmannInstruments,
Inc., Subsidiary of Sybron Corporation,Cantiague Road, Westbury,
N.Y. 11590, or call516/334-7500. In Canada: Brinkmann
Instruments(Canada), Ltd., or call 416/675-7911.
Eppendorf Repeater*Patent Pending
SYBRON BrinkmannCircle No. 400 on Readers' Service Card
:.:.1' "i:IsI- :.,, <
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