Ultima C18 is a polar embedded amide stationary phase and offers extended selectivity in comparison to traditional C18. ULTIMA C18 shows longer retention of very polar compounds and is compatible with 100% aqeous mobile phases. Pore size is 100Å.

Ultima C8 is a polar embedded amide stationary phase. Good for polar compounds and use in 100% aqueous mobile phases. Offers alternate selectivity to traditional C8. Pore size is 100Å.

Ultima Phenyl is a polar embedded amide stationary phase. Good for polar compounds and use in 100% aqueous mobile phases. Offers alternate selectivity to traditional Phenyl. Pore size is 100Å.