BIO-RAD Laboratories
1
Electrophoresis! New Products Electro- phoresis purity reagents give supe-i rior sepa rations. ΑΙ Β : =!• Ί '•'·•( trnphnrt-sispu'ity reagr-nts an-» pip- par. ΰ •! ic tcs'f H , jperidc.illy for high ri"!"i!ntinr plus low ιι ν QS.£>"h.fi re j r fer "Ht/ ar.d 'I'Piu'iucibuitj The result- shirp ?ln.ir h'inds - even in marginal cn&os Aqarjôo, jcr/jmidc, El:-. TLMCD, jm- nionium oer-ulfale. SDS 2-mwcaplu- 'jthanol dithio- thrulto- sTd Cuuma^sie Brilliant Blue R 250 afi aru tvjilible only from Qio-Rjd in alectropruire- sr· purity Equipment * Bio-Rad u'te 1- ? 3 qel e s. "C- phcresis it lis Model ?i0 ÛU3I Vert cal Sia- Ce I Mottol 15i> 12 luDe Coll ai"l Model 3W in T„isn > ! ' Crie» f-y = -ε rf •hrso ver«wt le ce'ls .1 id νου ν\ an electioshoresis nirily reagent kit 'rce T"Or »3i. * ••(!«> I 10 p3""Ct liu 1 » i naticr for suc.-'SSsfui c ert'ophuioais Laboratories Γ?ηϋ \ Crifm ^\e ni'nm-jnd ι,Α WHO·, Phnni» (415> 234-4130 Al»u m PocKilU'Cenlrr NY rt'omli-y Kunt EziwLirrJ Milan, Italy, Munich uprniany CIRCLE 33 ON READER SERVICE CARD NEW REPRO-JECTOR makes quality chromatograms with 0.6% reproducibility The Repro-Jector enabled a typist to make the three chromatograms illustrated. That's how simple this automatic sample injector is to use. The Repro-Jector entirely eliminates human inconsistency by mechanically metering the sample size and then reducing the discharge time to a split second by a constant force spring. Damage to syringes is practically impossible through protection devices, and only standard syringes are used. Other features of this remark- able instrument are that either horizontal or vertical injections can be made with equal ease, and that it may be easily adapted for either right- or left-hand operators. The cost is just a little more than one standard syringe. Write now for data sheet to Shandon Southern Instruments, Inc., 515 Broad Street, Sewickley, Pa. 15143 (Pittsburgh District). Sample specifications and details for these chromato- grams outlined on data sheet. S H A N D O Ν PITTSBURGH LONDON FRANKFURT Resin for Metals Separation Seelex A-100 is a cross-linked ali- phatic condensation resin containing amine and carboxyl groups. The product is available as pale amber, water-swollen granules having a 20/80 mesh size. When used as a stationary bed in a column with aqueous solu- tions of metal ions, the material will absorb heavy metals in preference to alkali or alkaline earth metals. Typi- cal selectivity is Cd > Cu > Fe > Ni > Co > Hg > Cr » Ca » Na. Seek- ay Chemical Co. 427 Stable-Isotope Tracers More than 100 standard chemical compounds labeled with atoms of the naturally occurring nonradioactive isotopes Carbon-13, nitrogen-15, and oxygen-18 are now available. Many other labeled compounds can be syn- thesized to order. Isotope percentages up to 90 for 13 C, 99.9 for 15 N, and 20 for 18 0 can be achieved. Prochem BOC, London SW19 3UF, England Spectrographs Standards Spectromel high-purity materials for the preparation of standards for use in semiquantitative emission spectro- graphs analysis consist of three mixtures. Mixture 1 contains 53 com- mon elements, mixture 2, 8 precious metal elements, and mixture 3,16 rare earth elements including scan- dium and yttrium. The materials are from Johnson Matthey Chemicals, Ltd., of England. Fisher Scientific Co. 428 Chelating Agents Research chelating agents newly available include iV-benzylethylenedi- aminetriaeetic acid and nitrilodiacet- icpropionic acid. Data and a bibliog- raphy are available. LaMont Labora- tories 429 For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards CIRCLE 210 ON READER SERVICE CARD 1044 A · ANALYTICAL CHEMISTRY, VOL. 45, NO. 12, OCTOBER 1973 BIO-RAD
Transcript of BIO-RAD Laboratories
Electrophoresis! New Products
Electrophoresis purity reagents give supe-i rior sepa rations. ΑΙ Β : =!• Ί '•'·•( trnphnrt-sispu'ity reagr-nts an-» pip-par. ΰ •! ic tcs ' f H ,
jperidc. i l ly for high ri"!"i!ntinr plus low ιι ν QS.£>"h.fi re j r fer "Ht/ ar.d 'I'Piu'iucibuitj The· result- shirp ?ln.ir h'inds - even in marginal cn&os Aqarjôo, j c r / jm idc , El:-. T L M C D , jm-nionium oer-ulfale. SDS 2-mwcaplu-
'jthanol dithio-thrul to- sTd Cuuma^sie Brilliant Blue R 250 afi aru tv j i l ib le o n l y f r o m Q i o - R j d in alectropruire-sr· purity Equipment *
Bio-Rad u'te1-? 3 qel e s . "C -
phcres is i t l is Model ?i0 ÛU3I
Vert cal Sia- Ce I Mottol 15i> 12 luDe
Coll ai"l Model 3W in T„isn > ! ' Crie» f - y = -ε r f
•hrso ver«wt le ce'ls .1 id νου ν\ an electioshoresis nirily reagent kit 'rce T"Or »3i. * ••(!«> I 10 p3""Ct liu1» i naticr for suc.-'SSsfui c ert'ophuioais
Laboratories Γ?ηϋ \ Crifm ^\e ni'nm-jnd ι,Α WHO·, Phnni» (415> 234-4130
Al»u m PocKilU'Cenlrr NY rt'omli-y Kunt EziwLirrJ Milan, Italy, Munich uprniany
CIRCLE 33 ON READER SERVICE CARD
NEW REPRO-JECTOR makes quality chromatograms with 0.6% reproducibility The Repro-Jector enabled a typist to make the three chromatograms i l lustrated. That's how simple this automatic sample injector is to use. The Repro-Jector entirely el iminates human inconsistency by mechanical ly metering the sample size and then reducing the discharge t ime to a split second by a constant force spring. Damage to syringes is practical ly impossible through protection devices, and only standard syringes are used. Other features of this remarkable instrument are that either horizontal or vert ical injections can be made with equal ease, and that it may be easily adapted for either right-or left-hand operators. The cost is just a little more than one standard syringe. Write now for data sheet to Shandon Southern Instruments, Inc., 515 Broad Street, Sewickley, Pa. 15143 (Pittsburgh District).
Sample specifications and details for these chromatograms outlined on data sheet.
S H A N D O Ν P I T T S B U R G H L O N D O N F R A N K F U R T
Resin for Metals Separation
Seelex A-100 is a cross-linked aliphatic condensation resin containing amine and carboxyl groups. The product is available as pale amber, water-swollen granules having a 20/80 mesh size. When used as a stationary bed in a column with aqueous solutions of metal ions, the material will absorb heavy metals in preference to alkali or alkaline earth metals. Typical selectivity is Cd > Cu > Fe > Ni > Co > Hg > Cr » Ca » Na. Seek-ay Chemical Co. 427
Stable-Isotope Tracers
More than 100 standard chemical compounds labeled with atoms of the naturally occurring nonradioactive isotopes Carbon-13, nitrogen-15, and oxygen-18 are now available. Many other labeled compounds can be synthesized to order. Isotope percentages up to 90 for 13C, 99.9 for 15N, and 20 for 1 8 0 can be achieved. Prochem BOC, London SW19 3UF, England
Spect rographs Standards
Spectromel high-purity materials for the preparation of standards for use in semiquantitative emission spectrographs analysis consist of three mixtures. Mixture 1 contains 53 common elements, mixture 2, 8 precious metal elements, and mixture 3,16 rare earth elements including scandium and yttrium. The materials are from Johnson Matthey Chemicals, Ltd., of England. Fisher Scientific Co. 428
Chelating Agents Research chelating agents newly available include iV-benzylethylenedi-aminetriaeetic acid and nitrilodiacet-icpropionic acid. Data and a bibliography are available. LaMont Laboratories 429
For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards
CIRCLE 210 ON READER SERVICE CARD
1044 A · ANALYTICAL CHEMISTRY, VOL. 45, NO. 12, OCTOBER 1973
BIO-RAD
