Product Name
AK Feminized
RKS GENETICS
STEEP HILL ANALYTICS
Independent Third-Party Verification Lab
2440 Industrial Pkwy West · Hayward, CA 94545
Tel: (510) 555-2240 · lab@cannalytics-coa.com
License #: C8-0000287-LIC
CERTIFICATE OF ANALYSIS
· GENETICS PROFILE ·
DOC ID: CAN-2026-04-A-0848
Lab verify
cannalytics·coa
cannalytics·coa
RKS genetics
royalkingseeds.es
royalkingseeds.es
CORE LINEGeneration:S1 FEMINIZED·Line:RKS Vault Selection
Phenotype:A-Pheno #5 (Citrus-Dominant)
Client / Brand
Royal King Seeds Ltd.
Strain Genetics
Sativa-Dominant Cross (94/6)
Sample ID
RKS-A-FEM-0848
Batch / Lot Number
A-2026-0848
Production Date
2026-03-08
Date Received
2026-04-11
Date of Analysis
2026-04-18 — 2026-04-28
RKS Stabilized Line
S1 · Trait-Locked
Verified Genetics
ISO 17025 Co-Signed
Breeder-Selected Phenotype
A-Pheno #5 of 15
RKS BREEDER NOTES
Batch No. A-2026-0848 · Core Line · Cycle 57
From the RKS Breeding Floor
The AK line traces its modern stabilization back to a multi-year selection program at our breeding facility. The phenotype reported here represents our top-performing mother across the most recent production cycle, hand-selected for terpene complexity and structural uniformity. The cohort screen — twelve plants per cycle — produces the variation envelope you see in the phenotype-consistency section. This Certificate documents the upper-percentile expression of the line. The line traces to a Strawberry Cough × Amnesia Haze cross, with each generation selected to fix the traits that define AK.
Breeding Objective · A-Pheno #5
- Fix the phenotype expression that defines this strain
- Improve resistance to common pathogens under indoor SOP
- Maintain commercial yield bands across cycles
- Reduce flower-window variance ≤ 5 days within cohort
D. Van Royen
Master Breeder · Royal King Seeds
Genetics verified by RKS Breeding Team
Genetics verified by RKS Breeding Team
Total THC
19.1%
Total CBD
0.31%
Total Terpenes
1.83%
Safety
ALL PASS
Cannabinoid Profile
| Analyte | Distribution | Result (%) | mg/g | LOQ |
|---|---|---|---|---|
| THCa | 20.08 | 200.8 | 0.05 | |
| Δ9-THC | 1.49 | 14.9 | 0.05 | |
| CBDa | 0.27 | 2.7 | 0.05 | |
| CBD | 0.07 | 0.7 | 0.05 | |
| CBG | 1.06 | 10.6 | 0.05 | |
| CBC | 0.55 | 5.5 | 0.05 | |
| CBN | 0.24 | 2.4 | 0.05 | |
| Total THC ((THCa × 0.877) + Δ9-THC) | 19.1 | 191.0 | — |
LOQ = Limit of Quantitation. ND = Not Detected. Results reported on dry-weight basis.
Terpene Profile
| Terpene | Concentration | Result (%) | mg/g | Aroma Note |
|---|---|---|---|---|
| Limonene | 0.580 | 5.80 | Citrus, lemon | |
| Pinene | 0.560 | 5.60 | Pine, fresh forest | |
| Terpinolene | 0.420 | 4.20 | Floral, herbal | |
| Caryophyllene | 0.160 | 1.60 | Spicy, peppery | |
| Linalool | 0.110 | 1.10 | Lavender, sweet | |
| Total Terpenes | 1.83 | 18.30 | Citrus, lemon |
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
10.5%
Water Activity (aw)
0.50
Density (g/mL)
0.36
Phenotype Consistency & Stabilization Line
Phenotype Consistency
The values reported on this Certificate reflect the top-performing phenotype(A-Pheno #5) selected from a 15-plant cohort of the RKS AK 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 A-Pheno #5 selection:
- Citrus-forward terpene expression (Limonene > 0.40%)
- Total terpenes ≥ 2.0% across cohort
- THCa ≥ 22% under standard indoor SOP
- Sativa structural uniformity · node spacing ≤ 8 cm
- Resistance to powdery mildew (visual screen)
- Flowering time variance ≤ 7 days within cohort
Expected Grow Outcomes
Flower Time
8 – 10
weeks
Yield (Indoor)
444–588
g / m²
Yield (Outdoor)
544–738
g / plant
Plant Height
144–188
cm indoor
Difficulty
Mod.
intermediate+
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. Anton Kovacs
Dr. Anton Kovacs, M.Sc.
Lead Analyst · GC-MS / HPLC Group
Dr. Camille Boucher
Dr. Camille Boucher
Laboratory Director · ISO 17025 Approving Officer
Disclaimer of variation · Results published in this Certificate represent a selected phenotype of the RKS AK 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 AK 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 A-Pheno #5 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 A-Pheno #5 profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.