LevGo 30202-48 Disposable Plastic Gel Cutter and Lab Safety Razor, 100 p/pack

At just 0.27 mm (0.011 in.) the smartSlicer is as thin as a single edge industrial razor blade but much safer - the smartSlicer is unlikely to slice you.
The smartSlicer is able to cleanly slice gels right on the light Box without scratching the surface of the box.
The smartSlicer can be used to chop, mince or slice some soft tissue samples.
The smartSlicer is adjustable - simply cut it with standard scissors to the width you require.
Available in two sizes:
Standard smartSlicer is the same size as an industrial single edge razor.
Large smartSlicer is 30% larger for bigger jobs.
smartSlicers are made in the USA of food grade PET and packed 100 per pack.