Darkroom Developing Equipment Kit Film Processing 120 135 35mm

In this review of the Darkroom Developing Equipment Kit, the bottom line is simple: this is a practical, complete starter set for photographers who want to process 120 and 135/35mm film at home. The kit brings together a developing tank and spirals that hold two 35mm rolls or one 120 roll, plus measuring tools, a loupe and a three-channel timer, so the biggest reason to buy is convenience - nearly everything needed to start developing color and B&W film is included in one package. It is a sensible choice for a learner or anyone replacing worn consumables.

Key Features

• Developing tank and spirals: The unbreakable plastic tank accepts two 135/35mm rolls or one 120 roll so users can process multiple rolls per session for efficiency.
• Three-channel timer: The timer clock offers three independently started channels with HR/MIN/SEC and AM/PM formats to keep development times accurate for different steps.
• Chemical bottles: Three wide-mouth chemical bottles handle developer, stop and fixer easily and are compatible with photographic chemicals for tidy pouring and storage.
• Measuring set: The kit includes two 1000ml measuring cups and 50ml and 25ml cylinders to mix chemicals to precise volumes without needing other lab glassware.
• Changing bag and gloves: The included changing bag and three rubber gloves let users load film in the dark without a dedicated darkroom space.
• Loupe and tools: A 10x loupe and a film canister opener provide simple finishing tools for inspection and film access after processing.

Who It's For

This kit is aimed at photography students, hobbyists and anyone starting to develop film who wants an all-in-one solution. It covers the essential hardware for both 120 medium format and 135/35mm film formats and contains measuring and timing accessories that simplify the learning curve.

Photographers who need professional laboratory glassware or specialized tanks for high-volume production should look elsewhere; this kit is best for personal use and learning rather than heavy commercial throughput. Also note batteries for the timer and thermometer are not included, so plan to have replacements on hand.

Pros & Cons

Pros

• Complete starter kit combines tank, spirals, timing and measuring tools in one purchase.
• Tank and spirals are compatible with Paterson and other common systems, making upgrades or replacements easier.
• Wide-mouth chemical bottles and full measuring set make mixing and pouring less messy.
• Changing bag and gloves let users process film without a dedicated darkroom space.

Cons

• Timer clock and thermometer do not include batteries, so they are not immediately plug-and-play.
• Chemical bottle colors are sent randomly, usually black, which may not match a user's preference for color coding.

Specifications

Format compatibility	120 and 135/35mm film
Developing tank	Unbreakable plastic, holds 2x 135 rolls or 1x 120 roll
Spiral reels	Included, compatible with Paterson and similar tanks
Timer	3 independent channels, HR/MIN/SEC, AM/PM (batteries not included)
Chemical bottles	3 wide-mouth bottles (color random, mostly black)
Measuring tools	2x 1000ml cups, 50ml and 25ml cylinders
Accessories	Changing bag, 3 rubber gloves, film canister opener, thermometer stirrer, 10x loupe

Our Verdict

The Darkroom Developing Equipment Kit is a strong value for beginners and students who want a ready-made set to start processing both 120 and 135/35mm film. It bundles compatible spirals, timing and measuring tools with useful accessories so novices can learn and practice without hunting for individual parts, though buyers should note batteries are not supplied for the timer and thermometer.

Frequently Asked Questions

Can the tank process two 35mm rolls at once?
Yes, the developing tank and spirals can accommodate two 135/35mm rolls simultaneously or one 120 roll.

Are chemicals included in the kit?
No, the kit provides three empty chemical bottles for developer, stop and fixer but does not include the chemical solutions themselves.

Do the timer and thermometer need batteries?
Yes, both the timer clock and the thermometer require batteries that are not included in the package.