BPI® Mini
Gradient™		 BPI® 4 Stroke
Gradient III™		 BPI® 5 Stroke
Gradient III™		 BPI®  Advanced
Computer Gradient III™
BPI# 12301 (110v) BPI# 12503 (110v) BPI# 12403 (110v) BPI# 12608 (110v)
BPI# 212301 (220v) BPI# 212503 (220v) BPI# 212403 (220v) BPI# 212608 (220v)
This small gradient has a continuous 4-stroke process without a timer. It will continue to cycle until it is turned off. It is simple to use and can be adapted to any unit. One year warranty.
UL Certification.		 This instrument incorporates the proven 4-stroke gradient process. The built in timer automatically turns it off and removes the lenses from the tint when the cycle is complete, giving the technician time for other tasks. Produces gradient lenses only. One year warranty. UL Certification. This unit is similar to the 4 Stroke Gradient, but it also has a switch that allows the unit to be used to process solid tints under timer control. One year warranty. UL Certification. The  most technologically advanced gradient system. The instrument has a solid state control center separate from the gradient head. The motor drives the lens holder by means of a long screw for continuous motion. Four programs enable you to easily control the type of effect. (See below).  One year warranty.
  BPI® Mini
Gradient™		 BPI® 4 Stroke
Gradient III™		 BPI® 5 Stroke
Gradient III™		 BPI® Computer
Gradient III™
Height (unit head): 5in (12.7cm) 7in (17.8cm) 7in (17.8cm) 10.5in (26.6cm)
Height on pole: 21in (53cm) 18in (45.7cm) 18in (45.7cm) 21in (53cm)
Left to right: 5in (12.7cm) 6in (15.24cm) 6in (15.24cm) 3in (7.6cm)
Front to back: 4.75in (12cm) 6in (15.24cm) 6in (15.24cm) 4in (10.1cm)
Weight: 7lbs (3.175kg) 7lbs (3.175kg) 7lbs (3.175kg) 7lbs (3.175kg)
Fuse: 1 amp 1 amp 1 amp 1 amp
Amperage: 1 amp 1 amp 1 amp 1 amp
Set-up kit:

Specify which type
of pole you require. (Counter-top or
tinting system
mount)

 1 nylon swivel
2 thumbscrews
1 ¼ inch rod
1 Lens holder
1 L-rod
1 gradient tip
1 scissor arm
Gradient pole.
Instruction manual		 1 nylon swivel
2 thumbscrews
1 ¼ inch rod
1 Lens holder
1 L-rod
1 gradient tip
1 scissor arm
Gradient pole.
Instruction manual		 1 nylon swivel
2 thumbscrews
1 ¼ inch rod
1 Lens holder
1 L-rod
1 gradient tip
1 scissor arm
Gradient pole.
Instruction manual		 1 nylon swivel
2 thumbscrews
1 Lens holder
1 L-rod
1gradient tip
1 extension arm
Gradient pole.
Instruction manual

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BPI®  Advanced Computer Gradient III™ Programs

Program 0: Solid
The operator enters the amount of time for the lens to be immersed in the dye. The computer dips the lens into the solution at high speed and then agitates it up and down by a few millimeters so that the fluid touching the lens is always at full strength. This is the fastest procedure for dyeing a lens a solid color. There is no minimum cycle time, the lens bobs up and down until the requested time expires.

Program 1: Parabolic
This program produces a lens in which the characteristic time-distance curve is parabolic. In general, a parabolic program cycle produces a higher contrast gradient than a linear cycle, but not so much as the cubic cycle described below. Minimum execution time for this program is about 48 seconds.

Program 2: Parabolic - Lower Light
This program has the same general features as number 1 but differs in that the lens dips more quickly at the end of the cycle, thus producing a smoother fade between the clear and colored part of the lens.

Program 3: Cubic
This program produces gradients whose time-distance curves are cubic in shape. It produces the most clearly visible gradients of any in this series and creates a subjective impression that the "turning point" between dark and light is nearer the dark side of the lens.

Program 4: 4 Stroke Process
This program emulates a mechanical 4- stroke gradient.

Program 5:
Similar to programs 1 and 3, but suitable for longer timed gradients. Program starts more quickly and stops more gradually. It produces a uniformly dark top with less gradient at the bottom. There is a fast dip at the end to minimize line formation.

Program 6:
Similar to program 5, but less aggressive.