Product Name
Jack Herer 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-JH-0906
Lab verify
cannalytics·coa
cannalytics·coa
RKS genetics
royalkingseeds.fr
royalkingseeds.fr
CORE LINEGeneration:S1 FÉMINISÉE·Line:RKS House Cut
Phenotype:JH-Pheno #5 (Cookies-Profile)
Client / Brand
Royal King Seeds Ltd.
Strain Genetics
Croisement Hybride (55/45)
Sample ID
RKS-JH-FEM-0906
Batch / Lot Number
JH-2026-0906
Production Date
2026-03-09
Date Received
2026-04-12
Date of Analysis
2026-04-20 — 2026-04-26
RKS Stabilized Line
S1 · Trait-Locked
Verified Genetics
ISO 17025 Co-Signed
Breeder-Selected Phenotype
JH-Pheno #5 of 15
RKS BREEDER NOTES
Batch No. JH-2026-0906 · Core Line · Cycle 55
From the RKS Breeding Floor
This Certificate documents the upper-percentile phenotype of our Jack Herer stabilized line. Our breeding criteria for this strain prioritize hybrid balance: no single terpene dominating the profile, trichome density above the cohort minimum, and a tight flower-time window. Twelve mother plants were screened in this cycle; the results here reflect the chosen pheno carried forward. The line traces to a AK-47 × Pineapple Express cross, with each generation selected to fix the traits that define Jack Herer.
Breeding Objective · JH-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
18.3%
Total CBD
0.27%
Total Terpenes
1.55%
Safety
ALL PASS
Cannabinoid Profile
| Analyte | Distribution | Result (%) | mg/g | LOQ |
|---|---|---|---|---|
| THCa | 19.90 | 199.0 | 0.05 | |
| Δ9-THC | 0.85 | 8.5 | 0.05 | |
| CBDa | 0.23 | 2.3 | 0.05 | |
| CBD | 0.07 | 0.7 | 0.05 | |
| CBG | 0.96 | 9.6 | 0.05 | |
| CBC | 0.37 | 3.7 | 0.05 | |
| CBN | 0.08 | 0.8 | 0.05 | |
| Total THC ((THCa × 0.877) + Δ9-THC) | 18.3 | 183.0 | — |
LOQ = Limit of Quantitation. ND = Not Detected. Results reported on dry-weight basis.
Terpene Profile
| Terpene | Concentration | Result (%) | mg/g | Aroma Note |
|---|---|---|---|---|
| Myrcène | 0.580 | 5.80 | Complex, layered | |
| Limonène | 0.420 | 4.20 | Complex, layered | |
| Caryophyllène | 0.260 | 2.60 | Complex, layered | |
| Valencène | 0.140 | 1.40 | Complex, layered | |
| Ocimène | 0.150 | 1.50 | Complex, layered | |
| Total Terpenes | 1.55 | 15.50 | Complex, layered |
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
12.1%
Water Activity (aw)
0.60
Density (g/mL)
0.38
Phenotype Consistency & Stabilization Line
Phenotype Consistency
The values reported on this Certificate reflect the top-performing phenotype(JH-Pheno #5) selected from a 15-plant cohort of the RKS Jack Herer 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 FÉMINISÉEThis line has been stabilized through successive inbred generations with phenotype-driven selection. Trait-locking criteria for the JH-Pheno #5 selection:
- Balanced terpene expression (no single >50% of profile)
- Predictable hybrid effect profile
- Cohort variation ≤ 12% on total cannabinoids
- Trichome density ≥ 28%
- Resistance to common mildew strains
- Flower window 8–10 weeks
Expected Grow Outcomes
Flower Time
9 – 11 semaines
weeks
Yield (Indoor)
460–570
g / m²
Yield (Outdoor)
410–620
g / plant
Plant Height
100–160
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
Elena Whitford
Elena Whitford
Laboratory Director · ISO 17025 Approving Officer
Disclaimer of variation · Results published in this Certificate represent a selected phenotype of the RKS Jack Herer 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 Jack Herer 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 JH-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 JH-Pheno #5 profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.