Type FF has virtually no background fluorescence which makes it ideal for observing low levels of fluorescence. It is highly stable, water white, and non-hydroscopic. Type FF can be substituted for all other fluorescence microscopy immersion oils in nearly all fluorescence applications.
OPTICAL & PHYSICAL PROPERTIES
| Refractive Index @ 23°C: |
| |
F Line (4861 A) |
1.4850 |
| |
E Line (5461 A) |
1.4811 |
| |
D Line (5893 A) |
1.4790 |
| |
C Line (6563 A) |
1.4766 |
| Dispersion: |
|
| |
nF-nC |
0.0084 |
| |
Abbe VD |
57.0 |
| |
Abbe Ve |
56.5 |
| Temperature Coefficient (15-35°C) |
-0.00037 |
| Stability (change in nD25°C after 24 hrs. @ temp.) |
| |
at 60°C: |
0 |
| |
at 100°C: |
0 |
| Fluorescence (1): |
|
| |
Short UV: |
none |
| |
Long UV: |
none |
| Color: (Gardner) |
<1 |
| Viscosity: +/-10% @ 23°C (centistokes) |
170
low |
| Density: |
|
| |
@ 23°C g/cc: |
0.877 |
| |
(US) lb/gal |
7.32 |
| Cloud Point: |
<-6°C |
| Flash Point: |
420°F |
| Neutralization No.: (mg KOH/gm) |
0.01 max |