Restek carries many accessories for SPE cartridges. To assure compatibility, simply match sizes across parts when ordering. For example, if 6 mL SPE cartridges are used, then 6 mL SPE accessories are needed, so part numbers 26012 (empty cartridge); 28270 (frits); 26003 (tube caps); and 26007 (connectors) are the correct items to choose.
The empty tubes are just that, empty SPE cartridges. To assemble, the frits should be securely placed at the bottom of each empty SPE cartridge. The tube caps are then used to cap the tops of the SPE cartridges. Connectors are used to join accessories and cartridges. The tops of the connectors all have a female luer fitting that will accept any accessory that has a male luer fitting, such as NORM-JECT and HENKE-JECT syringes; syringe filters; and SPE tubes (full or empty). The female luer end caps (cat.# 26000) are universal and fit all male luer tips. This means the female luer end caps are compatible with all Restek SPE tubes as well as with NORM-JECT and HENKE-JECT syringes and syringe filters.
