This is 1 lb of Potassium Bromide from Photographers' Formulary. It is commonly used as a restrainer in developers, especially those containing hydroquinone, pyrocatechin, or pyrogallol, and helps to prevent fog during development. When used in paper developers, it also reduces contrast and provides a warming effect. Additionally, potassium bromide is used as an ingredient in intensifying and reducing toners, as well as a variety of other photographic solutions.

Helps to Prevent Fog During Development    Commonly Used as a Restrainer    Reduces Contrast, Provides a Warm Tone

Related Questions and Answers

Q: 1. Can you get the foam grips for this tripod for the top sections, like the carbon version?

A: Unfortunately this is not something that we would sell, but you could contact the manufacturer to request ones for this tripod.

Q: 2. Does this base also rotate 360 degrees? I want to use it between my tripod and Seaport/iVisor laptop case

A: The Leofoto LB-65 Leveling Base cannot rotate 360°.

Q: 3. It is compatible with YELANGU L4X Motorized?

A: No, the YELANGU L4X Motorized Dolly is intended to be used on a flat surface. It will not attach to the YELANGU Track Slider.

Q: 4. Are additional mounts necessary for tripod use?

A: No additional mounts are necessary, the slider has ¼” 20 and 3/8” screw holes for attaching directly to a tripod plate.

Q: 5. Would it be a problem to have a 55mm diameter base ballhead mounted on this leveling base? Would it result in some kind of instability for the base-ballhead-tripod set?

A: There would be no problem using a 55mm diameter head. The set screws are well inside the top plate for use with small heads.

Q: 6. Any experience with this leveling device with Girzo gt 3532 mountaineer. Does it work with this tripod???

A: Yes, the Manfrotto 438 Compact Leveling Head has a 3/8" screw opening at the bottom and has a flat base. The Gitzo GT3532 Mountaineer Series 3 Carbon Fiber Tripod has a 3/8" screw and has a flat base as well, so they are compatible with each other.

Q: 7. How is the slider driven? Is it motorized?

A: Hi Jerry, This slider is not motorized. Movement is controlled manually.

Q: 8. Can I fix the 60mm on a Manfrotto 055 or do I need to get the 75mm?

A: Yes, you can use Leofoto LB-60N Leveling Base with Butterfly Handle with 60mm Plate to attach bettwen the tripod legs and Manfrotto 055 Magnesium Ball Head using the 3/8-16 conection.

Q: 9. does the tightening lever extend below the base of the unit? In other words could this be mounted on a flat plane of metal?

A: I mounted this leveler on a flat plate and could not move the locking lever. I had to use a fender washer between the leveler and the plate to make room. which, of course, allowed the leveler to spin a bit. I then had to tighten it down extremely well to get it to sit still.

Q: 10. How to charge Rode LB1 Battery?

A: Hello Wenjie. The LB1 is designed for the VideoMic Pro Plus and charges inside of it. All you need to do is plug in the included micro USB to its designated input on the microphone while the LB1 is inside.