The Parker CPI / A-LOK Column End Fitting - Low Internal Volume, Drop-in Frit (Z3HCZ7 / Z3HLZ7) is a column end fitting with an inverted 1/16" end (T2), for low internal volume use, that takes a drop-in frit. It comes in 4 size combinations with tube outer diameters from 1/16" to 1".
| Type | Column end fitting: low internal volume, drop-in frit |
| Part Numbers | CPI 4-1 Z3HCZ7, A-LOK 4-1 Z3HLZ7 ~ CPI 16-1 Z3HCZ7, A-LOK 16-1 Z3HLZ7 |
| Material | 316 stainless steel (heat code traceable) is standard / Other materials: steel, brass, aluminum, nickel-copper, Hastelloy C, Alloy 600, titanium, 6Mo, Incoloy 625 and 825 |
| Material Codes | Material code added to the end of the part number after a hyphen: B brass / SS or 316 = 316 stainless steel / S steel / A aluminum / M Alloy 400 / HC Hastelloy C-276 / IN Alloy 600 / SS20 Carpenter 20 / 6MO 6Mo / 625 / 825 / T titanium |
| Features | Inverted 1/16" end / Drop-in frit for use with L.C. (liquid chromatograph) or G.C. (gas chromatograph) columns / Available for up to 1" columns |
| Replacement Frit | Replacement frits are supplied as the DI FRIT series (2, 5 and 10 micron) |
| Sizes (inches): T1 tube O.D., T2 tube O.D., internal volume by CPI Part Number (A-LOK Part Number) | 4-1 Z3HCZ7 (4-1 Z3HLZ7): T1 tube O.D. 1/4", T2 tube O.D. 1/16", internal volume 6.1 × 10⁻⁴ cc / 6-1 Z3HCZ7 (6-1 Z3HLZ7): T1 tube O.D. 3/8", T2 tube O.D. 1/16", internal volume 8.1 × 10⁻⁴ cc / 8-1 Z3HCZ7 (8-1 Z3HLZ7): T1 tube O.D. 1/2", T2 tube O.D. 1/16", internal volume 2.8 × 10⁻³ cc / 16-1 Z3HCZ7 (16-1 Z3HLZ7): T1 tube O.D. 1", T2 tube O.D. 1/16", internal volume 2 × 10⁻² cc |