Product Name
Lethal Purple Feminized
RKS GENETICS
SC LABS
Independent Third-Party Verification Lab
2440 Industrial Pkwy West · Hayward, CA 94545
Tel: (510) 555-2240 · lab@cannalytics-coa.com
License #: C8-0000091-LIC
CERTIFICATE OF ANALYSIS
· GENETICS PROFILE ·
DOC ID: CAN-2026-04-LP-0937
Lab verify
cannalytics·coa
cannalytics·coa
RKS genetics
royalkingseeds.es
royalkingseeds.es
CORE LINEGeneration:S1 FEMINIZED·Line:RKS Heritage Line
Phenotype:LP-Pheno #2 (Berry-Forward)
Client / Brand
Royal King Seeds Ltd.
Strain Genetics
Hybrid Cross (62/38)
Sample ID
RKS-LP-FEM-0937
Batch / Lot Number
LP-2026-0937
Production Date
2026-03-13
Date Received
2026-04-16
Date of Analysis
2026-04-19 — 2026-04-27
RKS Stabilized Line
S1 · Trait-Locked
Verified Genetics
ISO 17025 Co-Signed
Breeder-Selected Phenotype
LP-Pheno #2 of 10
RKS BREEDER NOTES
Batch No. LP-2026-0937 · Core Line · Cycle 56
From the RKS Breeding Floor
The Lethal Purple line has been stabilized through successive inbred generations with phenotype-driven selection. The hybrid character — predictable balance, terpene complexity, manageable structure — has been our breeding objective from cycle one. The phenotype reported here is the top-performing selection from our most recent twelve-plant cohort; the variation envelope on the report shows the realistic spread you can expect from seeds in this line. The line traces to a Gorilla Glue × Wedding Cake cross, with each generation selected to fix the traits that define Lethal Purple.
Breeding Objective · LP-Pheno #2
- Intensify the dominant terpene expression of the line
- Reduce structural variation across cohort
- Improve mold & powdery-mildew resistance under high-humidity flower
- Lock the flowering window with ≤ 7 day cohort variance
D. Van Royen
Master Breeder · Royal King Seeds
Genetics verified by RKS Breeding Team
Genetics verified by RKS Breeding Team
Total THC
20.0%
Total CBD
0.31%
Total Terpenes
1.94%
Safety
ALL PASS
Cannabinoid Profile
| Analyte | Distribution | Result (%) | mg/g | LOQ |
|---|---|---|---|---|
| THCa | 20.91 | 209.1 | 0.05 | |
| Δ9-THC | 1.66 | 16.6 | 0.05 | |
| CBDa | 0.26 | 2.6 | 0.05 | |
| CBD | 0.08 | 0.8 | 0.05 | |
| CBG | 0.67 | 6.7 | 0.05 | |
| CBC | 0.46 | 4.6 | 0.05 | |
| CBN | 0.05 | 0.5 | 0.05 | |
| Total THC ((THCa × 0.877) + Δ9-THC) | 20.0 | 200.0 | — |
LOQ = Limit of Quantitation. ND = Not Detected. Results reported on dry-weight basis.
Terpene Profile
| Terpene | Concentration | Result (%) | mg/g | Aroma Note |
|---|---|---|---|---|
| Myrcene | 0.810 | 8.10 | Earthy, mango | |
| Limonene | 0.490 | 4.90 | Citrus, lemon | |
| Caryophyllene | 0.350 | 3.50 | Spicy, peppery | |
| Humulene | 0.250 | 2.50 | Hoppy, woody | |
| Ocimene | 0.040 | 0.40 | Sweet, herbal | |
| Total Terpenes | 1.94 | 19.40 | Earthy, mango |
Safety & Contaminant Screen
Pesticides & Plant Growth Regulators
66-analyte panel · LC-MS/MS & GC-MS/MS
Heavy Metals
Pb, Cd, As, Hg · ICP-MS
Microbial Impurities
Salmonella, STEC, Aspergillus spp. · qPCR
Mycotoxins
Aflatoxins B1, B2, G1, G2 · Ochratoxin A · LC-MS/MS
Residual Solvents
Cat I & II solvents · GC-MS Headspace
Foreign Matter
Visual + microscopic inspection
Filth & Foreign Materials
Insect frag., mammalian excreta, hair, mold
Water Activity & Moisture
aw meter · oven loss-on-drying
Quality Metrics
Moisture Content
11.6%
Water Activity (aw)
0.51
Density (g/mL)
0.37
Phenotype Consistency & Stabilization Line
Phenotype Consistency
The values reported on this Certificate reflect the top-performing phenotype(LP-Pheno #2) selected from a 10-plant cohort of the RKS Lethal Purple S1 line. Across three production cycles, individual plants from this seed line have fallen within a 10–15% variation envelope on total cannabinoids and total terpene yield when grown under comparable indoor conditions.
Note: phenotype expression is subject to environmental conditions (light, nutrients, VPD, training). These figures are not a guarantee of grow outcome.
Stabilization Status
S1 FEMINIZEDThis line has been stabilized through successive inbred generations with phenotype-driven selection. Trait-locking criteria for the LP-Pheno #2 selection:
- Cookies-family aroma fidelity
- Caryophyllene > 0.35%
- Trait stability across 3 production cycles
- Bud density 0.38–0.45 g/mL
- Mid-night-temperature tolerance
- Cohort flower variance ≤ 6 days
Expected Grow Outcomes
Flower Time
9 – 11
weeks
Yield (Indoor)
409–568
g / m²
Yield (Outdoor)
559–718
g / plant
Plant Height
129–198
cm indoor
Difficulty
Easy
beginner+
Reference outcomes are based on RKS breeding-room conditions: 600–900 PPFD, VPD 1.0–1.4 kPa, mineral-fed coco substrate, 18/6 veg · 12/12 flower. Outcomes will vary with cultivator skill, environment, and phenotype selection.
Analytical Methods
HPLC-DAD
Cannabinoid potency by reverse-phase HPLC with diode array detection. SOP-CAN-101 Rev 4.
GC-FID Headspace
Terpene quantification · 38-analyte target list. SOP-TER-204 Rev 2.
LC-MS/MS & GC-MS/MS
Pesticide and mycotoxin screening with QuEChERS prep. SOP-PES-310 Rev 5.
ICP-MS
Heavy metals (Pb, Cd, As, Hg) digested via microwave HNO₃. SOP-MET-115 Rev 3.
qPCR Microbiology
PathoSEEK® assay for Salmonella, STEC, and Aspergillus. SOP-MIC-401 Rev 2.
GC-MS Headspace (Solvents)
Cat I & II residual solvents per USP <467>. SOP-RSV-220 Rev 3.
Laboratory Authorization
Dr. Helena Park
Dr. Helena Park, Ph.D.
Senior Analyst · Cannabinoid Quantification
Mark Linden
Mark Linden
Laboratory Director · ISO 17025 Approving Officer
Disclaimer of variation · Results published in this Certificate represent a selected phenotype of the RKS Lethal Purple S1 stabilized line under controlled indoor conditions. Individual seedlings may produce plants that vary by approximately 10–15% on total cannabinoids and terpene output, and may express alternate phenotypes within the line. Final cannabinoid and terpene expression is subject to cultivator inputs — lighting, substrate, nutrient regime, environment, and training technique. This document is intended as a reference benchmark of the genetic potential of the RKS Lethal Purple line, not as a guarantee of any individual plant’s outcome.
Note for seed buyers · This Certificate analyzes mature, cured flower from a selected reference plant cultivated by the RKS breeding team under controlled conditions. Seed-grown plants may vary slightly from the tested phenotype depending on environment, nutrient regime, and grower input. For best expression of the LP-Pheno #2 profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.
Note for seed buyers · This Certificate analyzes mature, cured flower from a selected reference plant cultivated by the RKS breeding team under controlled conditions. Seed-grown plants may vary slightly from the tested phenotype depending on environment, nutrient regime, and grower input. For best expression of the LP-Pheno #2 profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.