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Comparison of Select Analytes from Different Laboratories in Tobacco and Smoke for Commercial Cigars Across a Range of Designs Cover

Comparison of Select Analytes from Different Laboratories in Tobacco and Smoke for Commercial Cigars Across a Range of Designs

Open Access
|Jan 2025

Figures & Tables

Figure 1.

Cigar products tested. Samples are ordered from top to bottom in the photograph as Sample A, Sample B, Sample C, Sample D, Sample E, and Sample F.

Table 1.

Sample information and nominal physical parameters values.

Study IDProduct TypeCircumference (mm)Diameter (mm)Length (mm)Weight (g)Features of note
ALarge filter cigar22799with filter: 1.29Filtered
BSmall cigar258992.57Irregular lighting end
CCigarillo2581142.87Tapered mouth-end
DWood-tipped cigar289with tip: 120with tip: 3.90Non-cylindrical wooden mouth-piece
without tip: 100without tip: 2.33
EHand-made cigar6520.712714.5Closed mouth-end, requires cutting
FHand-made cigar732315218.5Closed mouth-end, requires cutting
Table 2.

Summary of physical parameters results. Data are displayed as mean ± one standard deviation (% RSD); n = 20.

LabABCDEFLPR b
Conditioned cigar weight (g/cigar)
11.36 ± 0.02 (1)2.69 ± 0.17 (6)2.97 ± 0.23 (8)3.91 ± 0.27 (7)13.87 ± 1.24 (9)18.05 ± 0.60 (3)234%
21.37 ± 0.02 (2)2.68 ± 0.10 (4)3.04 ± 0.25 (8)3.93 ± 0.27 (7)13.58 ± 1.06 (8)19.27 ± 1.14 (6)245%
31.37 ± 0.02 (1)2.72 ± 0.16 (6)2.98 ± 0.28 (10)3.92 ± 0.34 (9)13.8918.20234%
LR a1%1%2%1%2%7%
Conditioned tobacco weight (g/cigar)
10.98 ± 0.02 (2)2.19 ± 0.10 (5)2.55 ± 0.22 (8)2.22 ± 0.23 (11)13.55 ± 1.25 (9)17.62 ± 0.59 (3)255%
20.97 ± 0.02 (2)2.22 ± 0.08 (4)2.59 ± 0.25 (10)2.23 ± 0.26 (12)13.39 ± 1.38 (10)18.80 ± 1.18 (6)266%
3NRNRNRNR13.8918.20NC
LR1%1%2%0%4%6%
Length (mm)
198.3 ± 0.2 (0.2)98.5 ± 1.2 (1.2)113.7 ± 0.3 (0.3)121.4 ± 0.5 (0.4)127.0 ± 0.4 (0.3)151.6 ± 0.5 (0.4)45%
298.7 ± 0.2 (0.2)102.5 ± 1.3 (1.3)112.8 ± 0.2 (0.2)121.5 ± 0.5 (0.4)126.2 ± 0.6 (0.5)152.2 ± 0.7 (0.5)45%
398.9 ± 0.3 (0.3)99.4 ± 0.8 (0.8)103.2 ± 0.5 (0.5)121.3 ± 0.5 (0.4)120.7141.137%
LR1%4%10%0%5%7%
Diameter (mm)
17.70 ± 0.02 (0.3)9.93 ± 0.14 (1.5)10.63 ± 0.04 (0.4)11.35 ± 0.05 (0.4)19.79 ± 0.44 (2.2)20.97 ± 0.37 (1.8)99%
27.82 ± 0.02 (0.3)10.38 ± 0.21 (2.0)10.67 ± 0.14 (1.3)11.59 ± 0.06 (0.5)20.07 ± 0.35 (1.7)21.56 ± 0.27 (1.3)100%
37.82 ± 0.06 (0.7)11.17 ± 0.34 (3.1)10.65 ± 0.18 (1.7)11.17 ± 0.25 (2.3)20.0321.2998%
LR2%12%0%4%1%3%
Pressure drop (mm H2O)
1260.7 ± 13.8 (5)104.7 ± 29.1 (28)127.3 ± 30.8 (24)96.3 ± 41.5 (43)37.4 ± 11.2 (30)37.9 ± 11.6 (31)202%
2266.6 ± 17.0 (6)87.0 ± 21.8 (25)155.6 ± 50.7 (33)85.7 ± 29.0 (34)47.4 ± 14.3 (30)33.0 ± 7.0 (21)208%
3287.6 ± 14.0 (5)107.7 ± 26.8 (25)134.2 ± 53.9 (40)86.6 ± 28.4 (33)52.335.9214%
LR10%21%20%12%33%14%

a LR: Lab Range = (labs’ maximum mean – labs’ minimum mean) / average of means the three labs;

b LPR: Lab Range across products = (lab’s maximum mean – lab’s minimum mean) / average of means for the lab for samples A–F; < value indicates reported results had one or more values below the method limit of quantitation;

* includes at least one dataset with

< values used in the calculation;

NR = not reported; NC = not calculated.

Figure 2.

Lab comparison: Pressure drop average of 7 replicates for each sample from three different labs. Error bars, if shown, are 3 × standard deviation.

Table 3.

Summary of tobacco testing results. Data are displayed as mean ± one standard deviation (% RSD); DWB = dry weight basis; n = 7.

LabABCDEFLPR b
Nicotine DWB (µg/g)
111065 ± 382 (3.5)22419 ± 642 (2.9)8336 ± 184 (2.2)9742 ± 391 (4.0)23666 ± 938 (4.0)29138 ± 1042 (3.6)120%
212858 ± 596 (4.6)18114 ± 928 (5.1)7832 ± 393 (5.0)11996 ± 604 (5.0)31864 ± 2633 (8.3)28475 ± 4084 (14.3)130%
314797 ± 622 (4.2)23685 ± 89 (0.4)8126 ± 60 (0.7)13734 ± 69 (0.5)26030 ± 253 (1.0)34491 ± 264 (0.8)131%
LR a29%26%6%34%30%20%
Ammonia DWB (µg/g)
12771 ± 41 (1.5)4769 ± 85 (1.8)2116 ± 35 (1.7)1616 ± 14 (0.9)6990 ± 124 (1.8)8593 ± 85 (1.0)156%
23112 ± 73 (2.4)4608 ± 71 (1.5)2344 ± 25 (1.1)1929 ± 37 (1.9)8048 ± 178 (2.2)8281 ± 233 (2.8)135%
33584 ± 144 (4.0)5497 ± 140 (2.6)2529 ± 56 (2.2)1841 ± 23 (1.2)8641 ± 213 (2.5)9745 ± 107 (1.1)149%
LR26%18%18%17%21%16%
Acetaldehyde DWB (µg/g)
11.17 ± 0.16 (14)0.21 ± 0.04 (19)0.97 ± 0.03 (3)0.29 ± 0.05 (16)0.65 ± 0.11 (17)1.28 ± 0.14 (11)140%
22.23 ± 0.12 (6)< 0.102.07 ± 0.30 (15)0.81 ± 0.08 (10)0.75 ± 0.02 (3)1.28 ± 0.22 (17)NC
30.50 ± 0.01 (2)0.22 ± 0.02 (9)1.11 ± 0.07 (6)< 0.100.33 ± 0.03 (8)0.61 ± 0.06 (10)161%
LR133%5%80%95%73%63%
Crotonaldehyde DWB (µg/g)
1< 0.040< 0.041< 0.041< 0.039< 0.042< 0.042NA
2< 0.050< 0.050< 0.050< 0.050< 0.050< 0.050NA
3< 0.050< 0.050< 0.050< 0.050< 0.009< 0.009NA
LRNANANANANANA
Formaldehyde DWB (µg/g)
11.22 ± 0.17 (14)0.51 ± 0.05 (10)0.71 ± 0.03 (4)3.33 ± 0.45 (14)1.19 ± 0.18 (15)1.39 ± 0.18 (13)203%
21.03 ± 0.08 (7)0.46 ± 0.09 (20)1.14 ± 0.11 (10)2.32 ± 0.11 (5)0.58 ± 0.01 (1)0.98 ± 0.12 (12)171%
30.83 ± 0.07 (8)0.26 ± 0.08 (31)0.78 ± 0.09 (12)1.21 ± 0.08 (7)0.69 ± 0.07 (11)0.52 ± 0.08 (15)133%
LR38%61%49%93%74%90%
Arsenic DWB (ng/g)
199 ± 6 (6)146 ± 11 (8)2342 ± 554 (24)2080 ± 162 (8)111 ± 4 (3)133 ± 6 (5)274%
2140 ± 15 (10)120 ± 11 (9)216 ± 17 (8)281 ± 30 (11)157 ± 18 (12)189 ± 16 (8)88%
3129 ± 10 (7)211 ± 16 (8)1028 ± 125 (12)265 ± 14 (5)188 ± 19 (10)140 ± 10 (7)275%
LR33%57%178%207%51%36%
Cadmium DWB (ng/g)
11078 ± 40 (4)1164 ± 45 (4)1173 ± 134 (11)1326 ± 29 (2)527 ± 16 (3)722 ± 25 (3)80%
21414 ± 88 (6)1381 ± 109 (8)1316 ± 84 (6)1622 ± 98 (6)669 ± 51 (8)328 ± 81 (25)115%
31273 ± 88 (7)1416 ± 34 (2)1312 ± 18 (1)1770 ± 15 (1)1216 ± 69 (6)769 ± 15 (2)77%
LR27%19%11%28%86%73%
Benzo(a)pyrene DWB (ng/g)
14.33 ± 0.31 (7)4.63 ± 0.39 (8)4.57 ± 0.23 (5)4.14 ± 0.25 (6)3.86 ± 0.25 (7)1.85 ± 0.14 (8)71%
25.38 ± 0.35 (7)5.85 ± 0.26 (5)5.63 ± 0.62 (11)3.19 ± 0.27 (9)< 2.19< 2.00NC
33.72 ± 0.81 (22)4.10 ± 0.25 (6)< 0.103.20 ± 0.31 (10)3.05 ± 0.33 (11)2.11 ± 0.25 (12)NC
LR37%36%21%27%23%13%
NNK DWB (ng/g)
14682 ± 149 (3)661 ± 43 (6)4388 ± 137 (3)445 ± 19 (4)687 ± 17 (2)164 ± 18 (11)246%
22701 ± 475 (18)477 ± 36(8)8938 ± 138(2)341 ± 11(3)< 1002425 ± 132(6)NC
32987 ± 162(5)606 ± 24(4)10164 ± 426(4)472 ± 28(6)1245 ± 255(21)163 ± 22(13)384%
LR57%32%74%31%58%247%
NNN DWB (ng/g)
15326 ± 295(5.5)3012 ± 155(5.1)10016 ± 495(4.9)1850 ± 127(6.9)2186 ± 60(2.8)2050 ± 87(4.2)200%
24896 ± 249(5.1)2674 ± 241(9.0)16749 ± 187(1.1)1625 ± 6(0.4)1244 ± 85(6.8)5173 ± 239(4.6)287%
35821 ± 224(3.8)3632 ± 92(2.5)26566 ± 752(2.8)3140 ± 160(5.1)3795 ± 347(9.1)1993 ± 46(2.3)328%
LR17%31%93%69%106%104%

a LR: Lab Range = (labs’ maximum mean – labs’ minimum mean) / average of means the three labs;

b LPR: Lab Range across products = (lab’s maximum mean – lab’s minimum mean) / average of means for the lab for samples A–F;

< value indicates reported results had one or more values below the method limit of quantitation;

* includes at least one dataset with < values used in the calculation;

NC = not calculated; NA = Not applicable.

Figure 3.

Lab comparison: Tobacco nicotine average of 7 replicates shown for each sample from three different labs. Error bars are 3 × standard deviation.

Table 4.

Employed machine smoking parameters.

ParameterCigar diameter ≤ 12.0 mmCigar diameter > 12.0 mm
Puff volume (mL)200.139 × (diameter)2
Puff frequency (s)4040
Puff duration (s)1.51.5
Table 5.

Summary results of puff count, TPM, “tar”, nicotine, water, and CO. Data are displayed as mean ± one standard deviation (%RSD); n = 20;.

LabABCDEFLPR b
Puff count (per cigar)
121 ± 1 (4)54 ± 10 (18)45 ± 3 (7)37 ± 3 (9)92 ± 14 (16)201 ± 59 (29)240%
222 ± 1 (6)57 ± 10 (18)42 ± 3 (7)50 ± 7 (15)103 ± 13 (12)155 ± 18 (12)186%
320 ± 1 (7)48 ± 7 (14)41 ± 4 (9)37 ± 5 (13)155 ± 25 (16)199 ± 32 (16)215%
LR a10%17%9%31%54%25%
“Tar” (mg/cigar)
122 ± 2 (10)37 ± 11 (30)49 ± 5 (11)31 ± 9 (30)92 ± 47 (51)138 ± 55 (40)189%
225 ± 3 (13)51 ± 8 (16)50 ± 5 (11)61 ± 8 (13)138 ± 26 (19)286 ± 47 (16)256%
319 ± 3 (17)45 ± 12 (25)49 ± 8 (17)39 ± 9 (22)171 ± 41 (24)291 ± 47 (16)266%
LR27%32%2%69%59%64%
Nicotine (mg/cigar)
10.95 ± 0.11 (11)2.26 ± 0.77 (34)1.45 ± 0.41 (28)1.08 ± 0.45 (41)5.62 ± 3.45 (61)22.24 ± 13.06 (59)380%
21.16 ± 0.11 (9)3.22 ± 0.49 (15)1.51 ± 0.18 (12)2.26 ± 0.30 (13)9.91 ± 3.46 (35)13.19 ± 5.69 (43)231%
30.86 ± 0.09 (10)3.33 ± 0.71 (21)1.42 ± 0.25 (18)1.49 ± 0.44 (30)9.86 ± 4.22 (43)25.70 ± 7.51 (29)349%
LR30%36%6%73%51%61%
Carbon monoxide (mg/cigar)
128 ± 3 (11.0)65 ± 18 (28.0)69 ± 43 (62.0)58 ± 17 (30.0)< 359.8553 ± 311 (56.0)340% c
230 ± 5 (17.0)70 ± 12 (18.0)72 ± 21 (30.0)78 ± 27 (35.0)446 ± 172 (39.0)751 ± 110 (15.0)299%
326 ± 3 (13.0)67 ± 13 (19.0)93 ± 10 (10.0)57 ± 8 (14.0)404 ± 60 (15.0)732 ± 69 (9.0)307%
LR14%7%31%33%21% a29%
Water (mg/cigar)
1< 0.6< 2.21.9 ± 0.5 (25)< 0.8< 88.0< 309.8NC
20.8 ± 0.4 (49)3.7 ± 1.6 (44)2.6 ± 1.7 (66)8.4 ± 2.7 (33)96.9 ± 35.5 (37)166.5 ± 53.6 (32)356%
30.1 ± 0.2 (206)0.7 ± 1.0 (141)0.8 ± 0.8 (101)1.0 ± 1.0 (106)88.8 ± 34.8 (39)261.9 ± 97.4 (37)445%
LR140% c136% c102%224% c10% c58% c
TPM (mg/cigar)
123 ± 2 (11)42 ± 13 (32)52 ± 6 (11)32 ± 10 (31)185 ± 102 (55)470 ± 261 (56)334%
227 ± 3 (12)58 ± 9 (15)54 ± 6 (11)71 ± 10 (14)245 ± 40 (16)466 ± 78 (17)286%
319 ± 3 (17)50 ± 12 (25)52 ± 8 (16)42 ± 10 (23)269 ± 72 (27)579 ± 111 (19)332%
LR35%32%4%81%36%22%

a LR: Lab Range = (labs’ maximum mean – labs’ minimum mean) / average of means the three labs;

b LPR: Lab Range across products = (lab’s maximum mean – lab’s minimum mean) / average of means for the lab for samples A–F;

c includes at least one dataset with < values used in the calculation;

< value indicates reported results had one or more values below the method limit of quantitation;

NR = not reported; NC = not calculated.

Figure 4.

Product comparison: “Tar” yields. Data shown for a single laboratory (Lab 1), n=20.

Figure 5.

TNCO Collaborative Studies: %R values for “tar” from 2007 to 2019 (n=5; laboratory count, typically <12).

Figure 6.

TNCO Collaborative studies: Cigar (40) vs. cigarette (41) regime for a cigarette monitor test piece where global mean is based on data from all laboratories in the study.

Table 6.

Summary of smoking results. Data are displayed as mean ± one standard deviation (%RSD); n = 7;.

LabABCDEFLPR b
Ammonia (µg/cigar)
128 ± 7 (27)60 ± 53 (87)107 ± 129 (121)104 ± 88 (85)1467 ± 1167 (80)5987 ± 3397 (57)461%
243 ± 12 (28)43 ± 9 (21)62 ± 5 (9)68 ± 13 (19)1101 ± 215 (20)2636 ± 1581 (60)394%
3< 30.0< 30.241 ± 7 (16)< 32.91503 ± 996 (66)5417 ± 2979 (55)NC
LR a45%67%94%104%30%72%
Acetaldehyde (µg/cigar)
1700 ± 133 (19)955 ± 286 (30)1721 ± 357 (21)1769 ± 454 (26)4669 ± 1925 (41)5011 ± 1134 (23)174%
2760 ± 67 (9)1334 ± 286 (21)1653 ± 263 (16)1747 ± 204 (12)3257 ± 726 (22)5520 ± 1082 (20)200%
31042 ± 73 (7)1906 ± 121 (6)2525 ± 199 (8)2251 ± 206 (9)3892 ± 728 (19)4503 ± 758 (17)129%
LR41%68%44%26%36%20%
Acrolein (µg/cigar)
127 ± 6 (24)11 ± 3 (30)26 ± 9 (35)33 ± 11 (33)63 ± 12 (19)99 ± 16 (16)204%
236 ± 4 (10)29 ± 3 (11)47 ± 10 (22)47 ± 10 (21)67 ± 18 (27)92 ± 19 (20)119%
340 ± 3 (8)26 ± 2 (8)51 ± 5 (9)51 ± 5 (9)28 ± 3 (11)63 ± 9 (14)86%
LR38%82%60%41%74%43%
Crotonaldehyde (µg/cigar)
16 ± 1 (21)9 ± 3 (31)42 ± 16 (39)38 ± 11 (28)61 ± 24 (39)77 ± 19 (25)183%
215 ± 2 (15)195 ± 38 (20)44 ± 8 (19)49 ± 8 (16)49 ± 10 (20)68 ± 23 (34)257%
311 ± 1 (7)20 ± 2 (10)40 ± 5 (12)44 ± 3 (7)20 ± 5 (26)27 ± 7 (27)122%
LR84%249%10%25%95%87%
Formaldehyde (µg/cigar)
111 ± 2 (18)8 ± 3 (36)11 ± 3 (26)15 ± 4 (29)8 ± 3 (33)9 ± 3 (33)68%
28 ± 2 (26)9 ± 2 (22)14 ± 3 (21)15 ± 5 (33)20 ± 3 (16)24 ± 5 (23)107%
37 ± 1 (11)7 ± 1 (17)13 ± 3 (22)21 ± 3 (16)9 ± 1 (13)16 ± 3 (21)115%
LR46%25%24%35%97%92%
4-Aminobiphenyl (ng/cigar)
14 ± 1 (17)9 ± 2 (18)15 ± 1 (8)5 ± 3 (65)41 ± 11 (28)50 ± 10 (20)223%
22 ± 0 (14)6 ± 2 (27)12 ± 1 (11)8 ± 2 (27)10 ± 4 (44)17 ± 5 (28)164%
33 ± 0 (9)7 ± 2 (33)13 ± 2 (15)5 ± 2 (36)19 ± 3 (15)38 ± 7 (17)247%
LR67%41%23%50%133%94%
1-Aminonaphthalene (ng/cigar)
153 ± 8 (15)90 ± 18 (20)137 ± 13 (10)55 ± 38 (69)424 ± 104 (24)518 ± 124 (24)218%
286 ± 7 (9)118 ± 31 (27)155 ± 21 (14)150 ± 30 (20)131 ± 54 (41)193 ± 51 (26)77%
339 ± 8 (20)77 ± 34 (44)111 ± 20 (18)55 ± 23 (42)170 ± 39 (23)308 ± 45 (15)212%
LR79%43%33%110%121%96%
2-Aminonaphthalene (ng/cigar)
135 ± 5 (14)48 ± 8 (18)78 ± 8 (10)35 ± 23 (65)221 ± 55 (25)270 ± 65 (24)205%
239 ± 2 (4)43 ± 9 (21)67 ± 5 (8)68 ± 14 (20)52 ± 21 (40)76 ± 24 (32)64%
326 ± 4 (16)38 ± 15 (38)60 ± 11 (19)32 ± 13 (42)88 ± 19 (21)168 ± 38 (23)207%
LR39%23%26%80%140%113%
Benzo(a)pyrene (ng/cigar)
111 ± 5 (48)23 ± 9 (42)74 ± 12 (15)32 ± 19 (58)97 ± 35 (36)155 ± 30 (19)220%
226 ± 4 (14)39 ± 7 (19)89 ± 11 (12)85 ± 17 (20)99 ± 19 (20)137 ± 25 (19)140%
319 ± 2 (11)30 ± 12 (42)68 ± 8 (11)63 ± 12 (19)78 ± 20 (26)113 ± 47 (42)152%
LR80%52%27%88%23%31%
NNK (ng/cigar)
1433 ± 79 (18)135 ± 36 (27)689 ± 216 (31)166 ± 82 (50)421 ± 213 (51)380 ± 268 (71)149%
21286 ± 246 (19)502 ± 111 (22)4299 ± 682 (16)574 ± 91 (16)1707 ± 2358 (138)529 ± 387 (73)256%
3419 ± 37 (9)213 ± 77 (36)1809 ± 327 (18)152 ± 58 (38)1266 ± 1492 (118)255 ± 77 (30)242%
LR122%130%159%142%114%71%
NNN (ng/cigar)
1350 ± 64 (18)240 ± 90 (37)838 ± 184 (22)224 ± 92 (41)1303 ± 1025(79)2364 ± 766 (32)241%
21177 ± 73 (6)1030 ± 215 (21)6313 ± 1008 (16)935 ± 96 (10)2286 ± 1399 (61)1989 ± 647 (33)235%
3402 ± 20 (5)517 ± 228 (44)3205 ± 482 (15)322 ± 112 (35)1755 ± 883 (50)3370 ± 1597 (47)191%
LR129%133%159%144%55%54%
Acrylonitrile (µg/cigar)
112 ± 3 (28)55 ± 12 (21)72 ± 15 (21)30 ± 16 (54)302 ± 56 (19)473 ± 90 (19)293%
217 ± 5 (27)63 ± 11 (18)81 ± 7 (8)57 ± 17 (29)112 ± 25 (23)184 ± 37 (20)195%
316 ± 1 (7)65 ± 19 (29)90 ± 12 (13)51 ± 3 (7)241 ± 36 (15)488 ± 79 (16)298%
LR33%16%22%59%87%80%
Benzene (µg/cigar)
158 ± 9 (16)248 ± 75 (30)280 ± 46 (16)152 ± 72 (48)1313 ± 144 (11)1634 ± 144 (9)257%
281 ± 19 (24)320 ± 52 (16)356 ± 29 (8)305 ± 80 (26)699 ± 97 (14)812 ± 168 (21)170%
371 ± 4 (6)318 ± 81 (25)364 ± 52 (14)231 ± 20 (9)1250 ± 154 (12)2021 ± 204 (10)275%
LR33%24%25%67%56%81%
1,3-Butadiene (µg/cigar)
156 ± 4 (7)185 ± 30 (16)235 ± 46 (20)116 ± 50 (43)974 ± 304 (31)974 ± 279 (29)217%
2207 ± 49 (24)600 ± 130 (22)757 ± 79 (10)515 ± 131 (25)1445 ± 724 (50)1172 ± 233 (20)158%
393 ± 5 (6)323 ± 97 (30)388 ± 37 (9)245 ± 18 (7)633 ± 124 (20)1033 ± 158 (15)208%
LR127%112%113%137%80%19%
Isoprene (µg/cigar)
1527 ± 90 (17)2019 ± 410 (20)1897 ± 333 (18)1001 ± 332 (33)8714 ± 1988 (23)11006 ± 3810 (35)250%
2736 ± 146 (20)2027 ± 447 (22)1864 ± 203 (11)1739 ± 377 (22)4360 ± 1348 (31)4893 ± 1186 (24)160%
3630 ± 54 (9)2253 ± 717 (32)1898 ± 156 (8)1490 ± 98 (7)7131 ± 1804 (25)14393 ± 2265 (16)297%
LR33%11%2%52%65%94%
Toluene (µg/cigar)
184 ± 25 (29)391 ± 93 (24)407 ± 93 (23)230 ± 93 (40)2700 ± 413 (15)3705 ± 642 (17)289%
2131 ± 33 (26)544 ± 78 (14)603 ± 70 (12)575 ± 149 (26)1273 ± 250 (20)1823 ± 316 (17)205%
3128 ± 9 (7)621 ± 140 (22)732 ± 116 (16)458 ± 47 (10)2706 ± 301 (11)5041 ± 536 (11)304%
LR41%44%56%82%64%91%

a LR: Lab Range = (labs’ maximum mean – labs’ minimum mean) / average of means the three labs;

b LPR: Lab Range across products = (lab’s maximum mean – lab’s minimum mean) / average of means for the lab for samples A–F;

c includes at least one dataset with < values used in the calculation;

< value indicates reported results had one or more values below the method limit of quantitation;

NR = not reported; NC = not calculated.

Figure 7.

Lab comparison: Smoke formaldehyde average of 7 replicates shown for each sample from three different labs. Error bars are 3 × standard deviation.

DOI: https://doi.org/10.2478/cttr-2024-0010 | Journal eISSN: 2719-9509 (formerly 1612-9237)
Language: English, French, German
Page range: 234 - 252
Published on: Jan 7, 2025
Published by: Beiträge zur Tabakforschung GmbH
In partnership with: Paradigm Publishing Services

© 2025 Rana Tayyarah, Leona R. Sirkisoon, Lee Gentry, published by Beiträge zur Tabakforschung GmbH
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License.