Depending on which lid you have on your tank, you can use the tank for normal hand development or connect it to one of the many processors (with a toothed ring for the lift and with a magnet for the models without lift).

The Jobo 1540 film development tank is the largest tank in Jobo's 1500 series development tanks and consists of a Jobo 1510 35mm tank combined with the 1530 expansion module. The tank comes with one adjustable 1501 spiral for the development of one 35mm film or up to two 120 roll films. The packaging also includes the standard red tank cover for manual inversion development.

The 1540 development tank can develop up to four 35mm films simultaneously using four 1501 coils. Depending on the use of the clip system in the 1501 spiral, the 1540 tank can also develop two to four 120 roll films simultaneously using two 1501 spirals. Each 1501 spiral is equipped with a red clip which makes it possible to load two roll films on one spiral without the risk of overlap. Because of this possibility, two roll films can be developed simultaneously with one 1501 spiral. Since the 1540 tank can hold two 1501 spirals with an adapted format for roll film, the tank can develop two roll films if the clip system is not used and four roll films if the clip system is used.

When the tank is used by hand for inversion development, the tank must be filled with only 975ml of photochemistry, making it one of the most economical ways to develop multiple 35mm films or roll films. For rotary development with a compatible Jobo processor, the tank only needs 470ml of photochemistry to get the job done. In that case the tank does need a cog (J1505) to attach it to the processor lift or a magnetic base (J1504) if the processor is not equipped with a lift. Both accessories are not included and are available separately.

With the JOBO 1530 "expansion module", a 2-piece tank can be transformed into a 5-piece, 7-piece, 8-piece tank in no time. The tanks always come with a maximum of one spiral. A plastic lid for hand development is fitted as standard. By inserting the gear rim, each tank can be converted into a processor tank.