Jobo Cog Lid

Jobo 1503 Cog Lid – Keep Your Original Inversion Lid or Convert to Rotary Tank

The Jobo 1503 cog lid gives you the choice to keep the original inversion lid that came with your tank or to use the 1503 cog for rotary processing. In other words, you do not need to convert the original lid with a 1505 cog if you prefer to retain it.

What the 1503 cog lid lets you do

Install the separate 1503 cog lid when you want to run the tank as a rotary processor. Alternatively, leave the original inversion lid in place and use the tank for inversion processing. This flexibility helps you adapt the same tank to different developing methods without permanently altering the original lid.

Compatibility

The 1503 cog lid fits all 1500 series tanks. Therefore, you can use it across your existing 1500 series tank models without needing additional modifications or different lid types.

Benefits and performance

• reproducible film processing
• even chemistry distribution
• for reliable results
• perfectly tuned to the CPP-3

Each of these points contributes to consistent outcomes when you switch between inversion and rotary methods. For example, even chemistry distribution supports uniform development across the film, while being tuned to the CPP-3 ensures the lid works in harmony with that specific drive unit.

Use cases

Choose the 1503 cog lid when you want to convert a 1500 series tank into a rotary setup. Keep the original inversion lid when you prefer inversion processing or when you want to preserve the tank’s original configuration.

FAQ

Question: Will the 1503 cog lid work with my 1500 series tank?
Answer: Yes. The 1503 cog lid fits all 1500 series tanks, so you can use it across those models without additional parts.

Question: Can I keep the original inversion lid if I buy the 1503 cog lid?
Answer: Yes. The separate 1503 cog lid allows you to retain the original inversion lid that came with your tank instead of converting it with a 1505 cog. You can switch between inversion and rotary configurations as needed.

Question: How does the 1503 cog lid affect processing results?
Answer: The 1503 cog lid supports reproducible film processing and even chemistry distribution, which helps deliver reliable results. It is also perfectly tuned to work with the CPP-3, aligning performance between lid and drive unit.

Question: Is the 1503 cog lid intended to replace the original lid permanently?
Answer: No. It is supplied as a separate cog lid so you can use it when you need rotary processing while keeping the original inversion lid available for inversion processing or to preserve the original setup.