'Round-the-clock HPLC Development and

'Round-the-clock HPLC Development and

Ternary gradient capability, automatic sample injection, programmable chromatographic parameter changes, a dual-channel data system, and printer/plotter output Cut methods development time by up make SP 8000 the first to 75%. truly automatic HPLC. LC methods development calls for the

systematic changing of chromatographic conditions: temperature, flow rate, mobile phase composition and other variables. SP 8000, by means of its microprocessor and keyboard programming, is the first HPLC to control all these things automatically. Faster, more complete separations. HPLC has always been viewed as potentially more powerful than GC because its mobile phase is an active partner in the separation process. Now recent work has shown that different solvent ratios in ternary mobile phases produce markedly different separations. For example: the selectivity of a

1048 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 12. OCTOBER 1978

reversed-phase column can be changt by varying the ratio of water, methane and acetonitrile. SP 8000, with its microprocessor-controlled, threesolvent, single-pump gradient system puts this added separation power at your command. Improved quantitative results and finished reports. SP 8000s powerful dual-channel data system provides extensive report formatting and post-run calculation cap. bilities. Its functions include internal/ external standardization and normalization; multi-level calibration; bracke ing; statistical analyses; molecular weight distribution; and simultaneou: dual-detector analysis, all recorded or a built-in printer/plotter. It's the kind of advanced system you'd expect to g