Film Developing Tools

Film Developing Tools

Match a Film Reel, Spiral or Sheet Holder to Your Tank

Take the model number from the tank body and the marking from the reel or holder you already use. Match those references before comparing extra reels, specialty widths and replacement parts.

Start with the tank family and center column

Look for the tank model in the maker’s compatibility table. A reel’s outside diameter and center hole are useful checks. Also confirm the center column and lid arrangement that makes the tank light-tight.

Check film width and batch capacity

An adjustable spiral can support several widths and still have different roll limits at each setting. A fixed-width 110 reel serves a narrower job. Where a reel can hold two rolls, verify the separating part and follow the loading instructions.

Compare the full path for sheet film

Match the sheet size and slot count, then check the height of the loaded holder and the room it needs in the tank. Treat 4×5 and 8×10 as separate configurations even if the listings use one family photo.

Source documentation

Guide questions

Is a two-reel tank the same as a two-roll reel?

Check both specifications. Tank capacity describes the tank and its installed reels, while reel capacity describes the load on one reel at a specified width.

Can I use a third-party spiral?

Look for the exact tank model and the compatible center-column arrangement. Ask for the part identification if the seller names only the brand.

What should I check on a replacement cap?

Match the tank series, closing mechanism and the intended agitation method. Read the maker’s instructions for the fit and seal.

Which accessory suits the job?

  1. A two-sheet insert suits a small batch. Compare the six-sheet insert if you want more capacity and have a confirmed compatible tank for its taller assembly.

    eTone two-sheet 4×5 spiral insert ↗eTone six-sheet 4×5 spiral insert ↗

Accessories in this guide

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