Optical
Optical
 |
 nice Brunson Optical Square Jig Transit 617517  US $3,200.00
|
 Wild Heerbrugg New Style Optical Vernier Theodolite T1 US $2,995.00
|
 Wild Heerbrugg T1 Optical Vernier Theodolite US $2,500.00
|
 Wild N3 Precise First Order Optical Micrometer Level 02mm CALIBRATED WARRANTY US $2,850.00
|
 BRUNSON 232 OPTICAL TOOLING HEAVY DUTY STAND PRECISION LIFT 53 89 TRIPOD KE US $2,250.00
|
 Wild Heerbrugg T1 New Style Optical Vernier Theodolite US $2,222.00
|
 Wild Heerbrugg New Style Optical Vernier Theodolite T16 US $2,000.00
|
 BRUNSON KE SCOPE M 71 2410 OPTICAL SQUARE US $1,800.00
|
 K E 20 SECOND PARAGON TRANSIT WITH OPTICAL PLUMB US $1,545.00
|
 Brunson 75 H Mulit Purpose Transit Optical Square 190 US $1,495.00
|
 Brunson 75 H Multi Purpose Transit Optical Square 190 Theodolite Micrometer US $1,495.00
|
 BRUNSON 71 JIG 76 Telescopic 75H Optical Transit Square Theodolite Micrometer US $1,495.00
|
 Kern Swiss AARAU DKM2 Optical Theodolite Erect Upright Telescope Imaging w Case US $1,333.33
|
 Davidson Optical Level US $1,200.00
|
 WILD HEERBRUGG T1 OPTICAL VERNIER THEODOLITE US $1,199.00
|
 BRUNSON 230 OPTICAL TOOLING STAND LATERAL SLIDE PRECISION LIFT from 43 TO 67 US $1,195.00
|
 1075mm black pvc Endglow light transmission Plastic fiber optic cable light US $1,099.00
|
 Optical inclinometer KO 60M quadrant USSR NOS US $999.00
|
 David White LT8 300P w Optical Plummet US $910.28
|
 Taylor Hobson Optical Square 112 5 22 Target w Hooks US $899.00
|
 Total Station Topcon GTS 2S Optical Surveyor US $975.00
|
 David White Univ Transit Level Int Optical Plummet US $799.99
|
 FIBER OPTIC LIGHT SOURCE SYSTEM FOR YOUR HOUSE OR IN A BUILDING US $799.99
|
 LQ 830 Optical Clinometer Quadrant Technique Index US $667.00
|
 ROBLON 01600153 FIBER OPTIC ILLUMINATOR STAR LIGHT NIB US $599.95
|
 KE Collimation stand optical tooling metrology alignment theodolite US $595.00
|
How do you find the optical purity of a Compound when given the known and experimental specific Rotation?
For example, an S enantiomer has a specific rotation of +24. A Commercial sample was found to have a rotation of +16. What is the optical purity of the mixture and the percentages of S and R enantiomers in the mixture?
A racemic mixture of the compound would have a specific rotation of 0, and would be a 50-50 mixture of the Two Forms. The commercial sample has a rotation 2/3 of the Pure S Form. Since the Total Range of rotations of different mixtures would be 48 degrees (-24 to +24), it is 1/6 R form (8/48) and 5/6 S form.
Just convert those fractions to percentages, and you've got it.
