Labsphere RSA-PE-20 User Manual

AQ-00073-000, Rev. 7 19
To use the tables, look at the wavelength of interest and find the value under the column marked
L2 corresponding as close as possible to sample reflectance you measured with your single beam
accessory. These values were determined with a PerkinElmer Lambda 2 double beam spectrom-
eter and an RSA-PE-20 single beam accessory. Compare the charted L2 value and your mea-
sured reflectance to the reflectance value under the column marked L19 immediately to its left.
The value under L19 is the actual value of reflectance of the sample at that wavelength - you
may need to interpolate. These values were determined with a Lambda 19 spectrometer and
RSA-PE-19 double beam accessory. The standards used in generating these tables were spec-
trally flat over a wide wavelength range. Supplemental information is available for some materi-
als along with the slope in their reflectance curves. This technique is the same used for
measurements of standards at the National Institute of Standards and Technology (NIST), the
National Physical Laboratory (NPL) and the National Research Council Canada (NRCC). The
data is available at Labsphere on disk. Be advised that these tables should used for diffusely
reflecting materials only.
300
0.009
0.011
0.053
0.065
0.099
0.123
0.192
0.231
0.337
0.394
0.378
0.436
325
0.009
0.011
0.050
0.064
0.095
0.121
0.188
0.230
0.329
0.392
0.371
0.434
350
0.009
0.012
0.050
0.064
0.093
0.121
0.184
0.230
0.323
0.388
0.366
0.432
375
0.009
0.011
0.049
0.064
0.092
0.122
0.182
0.229
0.319
0.387
0.362
0.431
400
0.010
0.011
0.048
0.064
0.091
0.122
0.181
0.230
0.316
0.386
0.360
0.431
425
0.010
0.011
0.048
0.064
0.091
0.122
0.181
0.231
0.314
0.385
0.359
0.431
450
0.010
0.011
0.048
0.064
0.091
0.122
0.182
0.232
0.313
0.385
0.358
0.432
475
0.010
0.011
0.049
0.064
0.091
0.122
0.183
0.233
0.313
0.385
0.359
0.433
500
0.010
0.011
0.049
0.064
0.092
0.123
0.184
0.235
0.313
0.385
0.359
0.433
525
0.010
0.011
0.050
0.065
0.092
0.123
0.186
0.236
0.313
0.385
0.360
0.434
550
0.010
0.011
0.050
0.065
0.093
0.123
0.187
0.238
0.313
0.385
0.361
0.435
575
0.010
0.011
0.050
0.066
0.093
0.124
0.188
0.239
0.314
0.386
0.362
0.436
600
0.010
0.011
0.051
0.066
0.094
0.124
0.190
0.240
0.315
0.386
0.364
0.436
625
0.010
0.011
0.051
0.066
0.095
0.125
0.191
0.241
0.316
0.386
0.365
0.436
650
0.011
0.011
0.052
0.067
0.095
0.125
0.193
0.243
0.317
0.386
0.366
0.437
675
0.011
0.011
0.052
0.067
0.096
0.126
0.194
0.243
0.317
0.386
0.367
0.437
700
0.011
0.011
0.053
0.068
0.097
0.126
0.195
0.245
0.318
0.387
0.368
0.438
725
0.011
0.011
0.054
0.068
0.098
0.127
0.196
0.245
0.319
0.388
0.369
0.439
750
0.011
0.011
0.054
0.068
0.099
0.127
0.198
0.246
0.320
0.388
0.370
0.440
775
0.012
0.011
0.055
0.069
0.100
0.128
0.199
0.247
0.321
0.388
0.371
0.440
800
0.012
0.011
0.056
0.069
0.101
0.129
0.200
0.249
0.323
0.391
0.372
0.440
825
0.012
0.011
0.057
0.070
0.102
0.130
0.202
0.249
0.324
0.391
0.374
0.442
850
0.013
0.011
0.057
0.071
0.102
0.131
0.203
0.251
0.325
0.391
0.375
0.442
875
0.013
0.012
0.058
0.072
0.104
0.132
0.204
0.251
0.326
0.391
0.376
0.442
900
0.013
0.012
0.059
0.072
0.104
0.133
0.206
0.252
0.327
0.391
0.377
0.441
925
0.014
0.012
0.059
0.072
0.105
0.133
0.207
0.252
0.328
0.391
0.378
0.441
950
0.014
0.012
0.060
0.072
0.106
0.134
0.208
0.252
0.329
0.391
0.379
0.442
975
0.014
0.013
0.061
0.073
0.107
0.134
0.209
0.254
0.331
0.392
0.380
0.443
1000
0.014
0.012
0.061
0.073
0.108
0.135
0.210
0.255
0.332
0.392
0.381
0.443
1025
0.014
0.012
0.062
0.075
0.108
0.135
0.210
0.256
0.333
0.393
0.382
0.443
1050
0.014
0.012
0.062
0.075
0.109
0.135
0.211
0.256
0.334
0.392
0.383
0.444
1075
0.014
0.012
0.062
0.075
0.110
0.136
0.212
0.257
0.334
0.394
0.383
0.444
1100
0.015
0.012
0.063
0.076
0.110
0.138
0.213
0.257
0.336
0.396
0.385
0.445
Wavelength Gray0/L2 Gray0/L19 Gray4/L2 Gray4/L19 Gray
5
/L2 Gray
5
/L19 Gray7/L2 Gray7/L19 Gray10/L2 Gray10/L19 Gray11/L2 Gray11/L1
9
Table 4. Reflectance values for gray Spectralon under 50%R.

Labsphere RSA-PE-20 Specifications

General

Brand	Labsphere
Model	RSA-PE-20
Category	Laboratory Equipment
Language	English