Develosil

 

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When 2 is better than 1:
Kromasil diC4 (300A) phase

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ACE Method Development Kits:
3 columns for the price of 1

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Analytica 2018 (Munich, Germany)

10-13 April, 2018

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Nomura - the manufacturer of C30 phases

Very rugged and very reproducible columns

It is well known that geometric and positional isomers of conjugated double bonding systems are recognised and resolved by C30 phases. Compared to classical C18 stationary phases, C30 is much more hydrophobic and show significantly greater shape selectivity due to their rigid, highly ordered C30 alkyl groups. Even when pure organic eluent is applied, many sample solutes, for example carotenoids and tocoferol, are able to retain.
For best performance, C30 columns should be used at ambient temperature or lower. At elevated temperatures the C30 alkyl chains will become less ordered and lose their shape selectivity. These phases should also be used with mobile phases containing at least 20% organic modifier to avoid phase collapse.
C30 phases are successfully used for the analysis of plant extracts, food, and biological tissues that contain structurally different carotenoids and  mixtures of geometric isomers. They are also used for separating stereoisomers of vitamin E and vitamin A, and for the separation of PAHs.

Develosil phases

Phase Functional Group Endcapped Particle, um Pore, A Carbon load, %
Si-30 (Type A) - - 3, 5, 10/20, 15/30 30 -
Si-60 (Type A) - - 3, 5, 7, 10, 10/20, 15/30 60 -
Si-100 (Type A) - - 3, 5, 15/30 120 -
ANIDIUS HILIC (proprietary) - 5 140 7.5
TMS C1 Yes (trifunctional) 3, 5, 7, 10 120 4
TMS-UG C1 Yes (trifunctional) 3, 5 140 4.5
300C4-HG C4 Yes (trifunctional) 5 250 4
C8 C8 Yes (monofunctional) 3, 5, 7, 10, 10/20 120 12
C8-UG C8 Yes (monofunctional) 3, 5 140 11
300C8-HG C8 Yes (trifunctional) 5 250 6
ODS C18 Yes (monofunctional) 3, 5, 7, 10, 10/20, 15/30 120 20
ODS-K C18 Yes (monofunctional) 3, 5, 7 120 19
ODS-N C18 Yes (monofunctional) 5 120 17
ODS-P C18 Yes (monofunctional) 5, 7 120 11
ODS-A C18 No (trifunctional) 3, 5, 7 120 20
ODS-T C18 Yes (trifunctional) 5, 7 120 19
ODS-UG C18 Yes (monofunctional) 3, 5, 10, 10/20, 15/30 140 18
ODS-HG C18 Yes (trifunctional) 3, 5, 7, 10, 10/20, 15/30 140 18
ODS-MG C18 Yes (difunctional) 3, 5, 10, 15/30 100 15
ODS-SR C18 Yes (difunctional) 3, 5, 15/30 80 18
300-ODS-HG C18 Yes (trifunctional) 5 250 11
PAHS C18 No (polymeric) 3, 5 120 23
XG-C18M C18 No (monofunctional) 3, 5 140 19
HSR-C18 C18 Yes (trifunctional) 3, 5 80 22
C30-UG C30 Yes (monofunctional) 3, 5, 10, 15/30 140 18
RP-AQUEOUS C30 (AQ) Yes (monofunctional) 3, 5, 10, 15/30 140 18
Combi-RP C30 (AQ) Yes (monofunctional) 3, 5 140 18
RPFULLERENE C30 Yes (monofunctional) 5 140 18
RP-AQUEOUS-AR C30 (AQ) Yes (monofunctional) 3, 5 140 18
ERP20 C30 Yes (monofunctional) 15/30 140 18
XG-30M C30 No (monofunctional) 3, 5 140 19.5
PH Phenyl Yes (monofunctional) 3, 5, 7, 10, 10/20, 15/30 120 9
PH-UG Phenyl Yes (monofunctional) 3, 5 140 8
100Diol DIOL No (trifunctional) 5, 10 120 12
300Diol DIOL No (trifunctional) 5 250 9
CN CN Yes (monofunctional) 3, 5, 10 120 7
CN-UG CN Yes (monofunctional) 5 140 7
NH2 NH2 No (trifunctional) 3, 5, 10 120 3

 

RP-Aqueous
RP-Aqueous-AR and
Combi-RP (C30) work with 100% aqueous mobile phases. Combi-RP is used for high flow rate Combinatorial Chemistry Applications. "AR" stands for improved Acid Resistance.

C18 chemistries with slightly different selectivities help fine-tune difficult separations: ODS-HG and ODS-UG have similar carbon loading, although the ODS-HG is bonded using polychlorosilylating reagents while the ODS-UG is bonded with monochlorosilylating reagents. The ODS-MG provides high retention of polar compounds and shows excellent reproducibility under highly aqueous conditions.