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

ISO/IEC 17025:2017 ACCREDITED

CERTIFICATE OF ANALYSIS

· GENETICS PROFILE ·

DOC ID: CAN-2026-04-M-0886

Lab verify
cannalytics·coa

RKS genetics
royalkingseeds.ca

LIMITED BATCHGeneration:S1 FEMINIZED·Line:RKS Master Selection

Phenotype:M-Pheno #5 (Berry-Forward)

Client / Brand

Royal King Seeds Ltd.

Product Name

Mandarin Feminized

Strain Genetics

Hybrid Cross (64/36)

Sample ID

RKS-M-FEM-0886

Batch / Lot Number

M-2026-0886

Production Date

2026-03-08

Date Received

2026-04-11

Date of Analysis

2026-04-20 — 2026-04-26

♛

RKS Stabilized Line

S1 · Trait-Locked

✓

Verified Genetics

ISO 17025 Co-Signed

★

Breeder-Selected Phenotype

M-Pheno #5 of 11

RKS BREEDER NOTES

Batch No. M-2026-0886 · Limited Batch · Cycle 55

From the RKS Breeding Floor

This Certificate documents the upper-percentile phenotype of our Mandarin 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 Gorilla Glue × Blue Dream cross, with each generation selected to fix the traits that define Mandarin.

Breeding Objective · M-Pheno #5

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

Total THC
17.4%
Total CBD
0.07%
Total Terpenes
1.61%
Safety
ALL PASS

Cannabinoid Profile

Method: HPLC-DAD · AOAC 2018.11

Analyte	Result (%)	mg/g	LOQ
THCa	18.78	187.8	0.05
Δ9-THC	0.93	9.3	0.05
CBDa	0.05	0.5	0.05
CBD	0.03	0.3	0.05
CBG	0.92	9.2	0.05
CBC	0.53	5.3	0.05
CBN	0.24	2.4	0.05
Total THC ((THCa × 0.877) + Δ9-THC)	17.4	174.0	—

LOQ = Limit of Quantitation. ND = Not Detected. Results reported on dry-weight basis.

Terpene Profile

Method: GC-FID · Headspace Sampling

Terpene	Result (%)	mg/g	Aroma Note
Myrcene	0.620	6.20	Earthy, mango
Limonene	0.420	4.20	Citrus, lemon
Caryophyllene	0.280	2.80	Spicy, peppery
Terpinolene	0.200	2.00	Floral, herbal
Humulene	0.090	0.90	Hoppy, woody
Total Terpenes	1.61	16.10	Earthy, mango

Safety & Contaminant Screen

All categories tested per Cal. BCC Title 16 §5719

Pesticides & Plant Growth Regulators

66-analyte panel · LC-MS/MS & GC-MS/MS

PASS

Heavy Metals

Pb, Cd, As, Hg · ICP-MS

PASS

Microbial Impurities

Salmonella, STEC, Aspergillus spp. · qPCR

PASS

Mycotoxins

Aflatoxins B1, B2, G1, G2 · Ochratoxin A · LC-MS/MS

PASS

Residual Solvents

Cat I & II solvents · GC-MS Headspace

PASS

Foreign Matter

Visual + microscopic inspection

PASS

Filth & Foreign Materials

Insect frag., mammalian excreta, hair, mold

PASS

Water Activity & Moisture

aw meter · oven loss-on-drying

PASS

Quality Metrics

Stability & storage indicators

Moisture Content

11.3%

Water Activity (aw)

0.52

Density (g/mL)

0.42

Phenotype Consistency & Stabilization Line

RKS internal selection criteria · not tested by lab

Phenotype Consistency

The values reported on this Certificate reflect the top-performing phenotype(M-Pheno #5) selected from a 11-plant cohort of the RKS Mandarin 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.

Cohort variation (n=11)Reference pheno = THC 17.4%

15.7% (low)19.0% (high)

Note: phenotype expression is subject to environmental conditions (light, nutrients, VPD, training). These figures are not a guarantee of grow outcome.

Stabilization Status

S1 FEMINIZED

This line has been stabilized through successive inbred generations with phenotype-driven selection. Trait-locking criteria for the M-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

RKS internal cultivation reference · standard indoor SOP

⏱

Flower Time

8 – 10

weeks

🏠

Yield (Indoor)

486–672

g / m²

☀

Yield (Outdoor)

486–722

g / plant

↕

Plant Height

96–152

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.

♛ RKS Genetics Authority Statement

The genetic line analyzed in this Certificate was bred, selected, and stabilized by the Royal King Seeds Breeding Team at our in-house breeding facility. This batch was independently verified by STEEP HILL ANALYTICS under chain-of-custody protocol CAN-COC-691. The data herein is published as a reference benchmarkfor the RKS Mandarin stabilized line — a documented standard against which every seed in this lot has been bred to perform.

D. Van Royen

D. VAN ROYEN

Master Breeder · Royal King Seeds

M. Albright

M. ALBRIGHT

Genetics Verification Lead · RKS Breeding Team

Analytical Methods

Validated SOPs · ISO 17025 scope

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

Document validity: 12 months from date of issue

Dr. Anton Kovacs

Dr. Anton Kovacs, M.Sc.

Lead Analyst · GC-MS / HPLC Group

Elena Whitford

Laboratory Director · ISO 17025 Approving Officer

Disclaimer of variation · Results published in this Certificate represent a selected phenotype of the RKS Mandarin 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 Mandarinline, 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 M-Pheno #5profile, follow the cultivation reference outlined in the “Expected Grow Outcomes” section above.

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