Lab HQ: +255 758 381 273 Direct: +255 784 894 577 info@rvalabs.co.tz
WhatsApp Lab Desk Mwanza Main Lab • Regional Drop-Offs
ISO/IEC 17025 Accredited Laboratory Directory

Commercial Analytical & Assay Services

High-capacity commercial mineral assaying, precious metals fire assay, ultra-trace ICP-MS/OES multi-element suites, metallurgical testing, and statutory NEMC environmental reporting in Mwanza, Tanzania.

Standard & Custom Testing Packages

Showing accredited analytical methods with technical detection limits
Fire Assay — Gold (AAS Finish) FA-AAS-01
Fire Assay & Precious Metals Analysis

Fire Assay — Gold (AAS Finish)

Industry-standard gold analysis utilizing 30g/50g lead collection fire assay fusion followed by cupellation, acid digestion, and Flame AAS…

Elements: Gold (Au)
Detection Limit: 0.01 – 100.0 ppm Au (g/t)
Sample Weight: 30g to 50g pulverized pulp (85% passing 75µm)
Turnaround (TAT): Standard: 3-5 Working Days | Fast-Track Rush: 24-48 Hours
Fire Assay — Gold (Gravimetric Finish) FA-GRAV-02
Fire Assay & Precious Metals Analysis

Fire Assay — Gold (Gravimetric Finish)

High-precision gold determination designed for high-grade exploration intercepts, mine production ores, concentrates, and bullion samples using direct micro-gravimetric…

Elements: Gold (Au) High Grade
Detection Limit: 1.0 – 10,000.0 ppm Au (g/t)
Sample Weight: 30g or 50g pulverized sample pulp
Turnaround (TAT): Standard: 3-5 Working Days | Fast-Track Rush: 24 Hours
Fire Assay — Silver (Ag Gravimetric & AAS) FA-AG-03
Fire Assay & Precious Metals Analysis

Fire Assay — Silver (Ag Gravimetric & AAS)

Accurate silver analysis using classical fire assay fusion with gravimetric or AAS finish, delivering dependable evaluation for polymetallic…

Elements: Silver (Ag)
Detection Limit: 0.5 – 5,000.0 ppm Ag (g/t)
Sample Weight: 30g sample charge (85% <75µm)
Turnaround (TAT): Standard: 3-5 Working Days | Fast-Track: 48 Hours
Fire Assay — Platinum Group Elements (Pt, Pd, Rh via NiS Collection) FA-PGE-04
Fire Assay & Precious Metals Analysis

Fire Assay — Platinum Group Elements (Pt, Pd, Rh via NiS Collection)

Comprehensive determination of Platinum Group Elements using advanced nickel sulphide fusion and tellurium coprecipitation for layered mafic-ultramafic complexes…

Elements: Platinum (Pt), Palladium (Pd), Rhodium…
Detection Limit: Pt: 0.005 – 10.0 ppm | Pd: 0.005 – 10.0 ppm | Rh: 0.001 – 5.0 ppm
Sample Weight: 30g to 50g pulverized sample pulp
Turnaround (TAT): Standard: 5-7 Working Days
Metallic Screen Fire Assay (Coarse / Nuggety Gold) SCR-FA-05
Fire Assay & Precious Metals Analysis

Metallic Screen Fire Assay (Coarse / Nuggety Gold)

Specialized screen fire assay eliminating the 'nugget effect' in coarse-gold deposits by screening 1kg of pulverized sample at…

Elements: Coarse Gold (>106µm), Fine Gold…
Detection Limit: 0.05 – 10,000.0 ppm Au (g/t)
Sample Weight: 1.0 kg to 2.0 kg representative drill core or bulk sample
Turnaround (TAT): Standard: 4-6 Working Days
ICP-OES Multi-Element Geochemical Package (33 Elements) ICP-OES-33
Multi-Element & Geochemical Analysis

ICP-OES Multi-Element Geochemical Package (33 Elements)

Cost-effective 33-element geochemical suite utilizing aqua regia or four-acid digestion with simultaneous ICP-OES determination for regional mapping, soil…

Elements: 33 Elements: Ag, Al, As,…
Detection Limit: 0.5 ppm – 10,000 ppm (matrix dependent)
Sample Weight: 0.5g pulverized pulp (85% <75µm)
Turnaround (TAT): Standard: 3-5 Working Days
ICP-MS Ultra-Trace Exploration Package (51–65 Elements) ICP-MS-65
Multi-Element & Geochemical Analysis

ICP-MS Ultra-Trace Exploration Package (51–65 Elements)

Ultra-sensitive multi-element package detecting trace and ultra-trace pathfinder elements at parts-per-billion (ppb) levels for greenfield exploration, deep-cover targeting,…

Elements: Up to 65 Elements including…
Detection Limit: 0.01 ppb (0.00001 ppm) – 500 ppm
Sample Weight: 0.25g to 0.5g pulverized pulp
Turnaround (TAT): Standard: 5-7 Working Days
Geochemical Baseline Assessment & Water Analytics GEO-WAT-08
Multi-Element & Geochemical Analysis

Geochemical Baseline Assessment & Water Analytics

Comprehensive environmental and hydrogeochemical baseline studies for exploration concession characterization, pre-mining baseline reporting, and catchment hydrochemistry.

Elements: Heavy metals, dissolved anions, major…
Detection Limit: ppb to ppm range
Sample Weight: 1.0L water in sealed HDPE containers + 500g stream sediment
Turnaround (TAT): Standard: 3-5 Working Days
XRF Whole-Rock Major Oxide Analysis (Fused Bead) XRF-FUS-09
Multi-Element & Geochemical Analysis

XRF Whole-Rock Major Oxide Analysis (Fused Bead)

Precision whole-rock geochemical characterization of silicate, carbonate, and iron formations using lithium borate fusion discs to eliminate mineralogical…

Elements: SiO2, Al2O3, Fe2O3, CaO, MgO,…
Detection Limit: 0.01% – 100.0% Major Oxides
Sample Weight: 2.0g pulverized sample pulp
Turnaround (TAT): Standard: 4-6 Working Days
AAS & UV-VIS Base Metal Assay (Cu, Pb, Zn, Ni, Co, Mn) AAS-BM-10
Multi-Element & Geochemical Analysis

AAS & UV-VIS Base Metal Assay (Cu, Pb, Zn, Ni, Co, Mn)

High-precision single and multi-element base metal grade assays for mineralized intersections, concentrate shipments, metallurgical testwork products, and ore…

Elements: Copper (Cu), Lead (Pb), Zinc…
Detection Limit: 0.001% – 30.0% Metal Content
Sample Weight: 0.5g pulverized pulp
Turnaround (TAT): Standard: 2-4 Working Days | Fast-Track: 24 Hours
Aqua Regia Digestion + ICP Geochemical Sweep DIG-AR-11
Sample Digestion & Chemical Preparation

Aqua Regia Digestion + ICP Geochemical Sweep

Partial multi-element extraction selectively leaching gold, sulphide-hosted metals, and mobile elements in soils, stream sediments, and weathered saprolite…

Elements: Precious metals pathfinders, base metals,…
Detection Limit: 0.1 ppm – 10,000 ppm
Sample Weight: 0.5g to 1.0g pulp
Turnaround (TAT): Standard: 3-5 Working Days
Four-Acid Near-Total Digestion (HF-HNO3-HClO4-HCl) DIG-4AC-12
Sample Digestion & Chemical Preparation

Four-Acid Near-Total Digestion (HF-HNO3-HClO4-HCl)

Aggressive hydrofluoric, nitric, perchloric, and hydrochloric acid digestion dissolving virtually all silicate, oxide, and sulphide minerals for true…

Elements: Total lithological suite, refractory silicates,…
Detection Limit: 0.1 ppm – 100%
Sample Weight: 0.25g to 0.5g pulp
Turnaround (TAT): Standard: 4-6 Working Days
LECO Combustion Total Carbon & Total Sulphur LECO-CS-13
Sample Digestion & Chemical Preparation

LECO Combustion Total Carbon & Total Sulphur

Accurate determination of carbon and sulphur species in ores, tailings, metallurgical feeds, and drill core using high-temperature induction…

Elements: Total Carbon (C), Total Sulphur…
Detection Limit: 0.01% – 50.0% C / S
Sample Weight: 0.2g pulverized sample
Turnaround (TAT): Standard: 2-3 Working Days | Express: 24 Hours
Leach Profile Testing & Dynamic Carbon Gold Extraction LEACH-PRF-14
Sample Digestion & Chemical Preparation

Leach Profile Testing & Dynamic Carbon Gold Extraction

Diagnostic cyanide leach kinetics profiling assessing free-milling vs refractory gold behavior, cyanide consumption, and preg-robbing characteristics of mineralized…

Elements: Cyanide Soluble Gold (Au_CN), Carbon…
Detection Limit: 0.01 – 100 ppm Au
Sample Weight: 500g to 2kg crushed ore or pulp
Turnaround (TAT): Standard: 3-5 Working Days
Standard Sample Preparation Package (Drying, Crushing, Pulverizing) PREP-STD-15
Sample Preparation & Core Cutting

Standard Sample Preparation Package (Drying, Crushing, Pulverizing)

Comprehensive sample preparation pipeline guaranteeing zero cross-contamination through strict quartz wash cycles, systematic sieve sizing QC, and automated…

Elements: Complete Physical Sample Preparation &…
Detection Limit: QC: 70% passing 2mm, 85% passing 75µm (200 mesh)
Sample Weight: Up to 5kg raw drill core, rock chip, or trench sample
Turnaround (TAT): Standard: 24-48 Hours (integrated into assay turnaround)
Diamond Core Cutting, Quartering & Precision Sampling PREP-COR-16
Sample Preparation & Core Cutting

Diamond Core Cutting, Quartering & Precision Sampling

High-precision automated diamond core sawing providing clean longitudinal halves and quarters with strict core orientation line preservation and…

Elements: Geological Core Logging Support &…
Detection Limit: HQ, NQ, PQ, BQ standard diamond drill core diameters
Sample Weight: Raw core boxes directly from diamond drilling rig
Turnaround (TAT): Per meter throughput: Up to 300m per day
Riffle & Rotary Splitting, Blending & Compositing PREP-SPL-17
Sample Preparation & Core Cutting

Riffle & Rotary Splitting, Blending & Compositing

Statistically sound sample reduction following Gy's sampling theory to ensure master pulp and duplicate aliquots are perfectly representative…

Elements: Representative Sample Division & Metallurgical…
Detection Limit: Sub-sampling variance < 2.0%
Sample Weight: Bulk crushed ore or pulp from 1kg to 100kg
Turnaround (TAT): Standard: 24-48 Hours
Specific Gravity & Wax-Coated Bulk Density Determination PREP-SG-18
Sample Preparation & Core Cutting

Specific Gravity & Wax-Coated Bulk Density Determination

Crucial physical density measurements required for JORC and NI 43-101 mineral resource estimation, mine tonnage calculations, and metallurgical…

Elements: Specific Gravity (SG), Bulk Density…
Detection Limit: 0.01 g/cm³ precision
Sample Weight: 10cm to 20cm solid core billets or irregular rock specimens
Turnaround (TAT): Standard: 24-48 Hours
Cyanide Bottle Roll Leach Kinetics & Recovery Testing MET-BRL-19
Metallurgical Testwork & Leaching

Cyanide Bottle Roll Leach Kinetics & Recovery Testing

Bench-scale cyanidation testwork determining gold and silver leach kinetics, reagent consumptions (NaCN and hydrated lime), and optimum grind…

Elements: Gold & Silver Extraction %,…
Detection Limit: Extraction %: 0.1% to 100.0%
Sample Weight: 1.0 kg to 5.0 kg crushed ore or pulp per test
Turnaround (TAT): Standard: 5-7 Working Days (includes 24h to 72h leach cycle)
Bulk Leach Extractable Gold (BLEG) for Soil Geochemistry MET-BLG-20
Metallurgical Testwork & Leaching

Bulk Leach Extractable Gold (BLEG) for Soil Geochemistry

Ultra-sensitive bulk leaching method for regional exploration soil and stream sediment samples, identifying faint geochemical gold halos and…

Elements: Cyanide-extractable Gold (Au), Silver (Ag),…
Detection Limit: 0.1 ppb Au (0.0001 ppm)
Sample Weight: 1.0 kg to 5.0 kg bulk un-pulverized stream sediment or soil
Turnaround (TAT): Standard: 4-6 Working Days
Carbon Activity (R-Value) & Gold-on-Carbon CIL/CIP Optimization MET-CAR-21
Metallurgical Testwork & Leaching

Carbon Activity (R-Value) & Gold-on-Carbon CIL/CIP Optimization

Diagnostic evaluation of virgin, plant, and regenerated activated carbon to maximize gold adsorption rates and prevent soluble gold…

Elements: Carbon Activity Rate (R-value), Gold…
Detection Limit: Activity %: 0.1% – 100% | Au on carbon: 1.0 – 20,000 g/t
Sample Weight: 100g to 500g fresh, regenerated, or plant activated carbon
Turnaround (TAT): Standard: 2-3 Working Days | Express: 24 Hours
Bench-Scale Ore Flotation & Sulphide Beneficiation Testwork MET-FLT-22
Metallurgical Testwork & Leaching

Bench-Scale Ore Flotation & Sulphide Beneficiation Testwork

Laboratory flotation testing optimizing collector, frother, activator, and depressant dosages for refractory gold-bearing sulphides, copper porphyry, and polymetallic…

Elements: Mass Pull %, Concentrate Grade,…
Detection Limit: Concentrate grade up to 60.0% metal
Sample Weight: 10 kg to 25 kg crushed ore
Turnaround (TAT): Standard: 7-10 Working Days
High-Purity Concentrate, Bullion & Gold Doré Commercial Assay MET-DOR-23
Metallurgical Testwork & Leaching

High-Purity Concentrate, Bullion & Gold Doré Commercial Assay

Commercial settlement-grade bullion and doré assaying using proof-corrected fire assay and gravimetric parting for gold traders, smelters, refineries,…

Elements: Fineness of Gold (Au), Silver…
Detection Limit: Gold Fineness: 100 – 999.9 parts per thousand (0.01% precision)
Sample Weight: 0.5g to 2.0g dip sample pin, vacuum tube sample, or bullion drillings
Turnaround (TAT): Standard: 24-48 Hours | Same-Day Rush Available
Acid Rock Drainage (ARD): Acid-Base Accounting (ABA) & NAG Testing ENV-ARD-24
Environmental & Water Analysis

Acid Rock Drainage (ARD): Acid-Base Accounting (ABA) & NAG Testing

Static geochemical characterization determining the acid-generating or acid-neutralizing capacity of mine waste rock and tailings for EIA, closure…

Elements: Maximum Potential Acidity (MPA), Neutralization…
Detection Limit: kg H2SO4 / tonne equivalent (0.1 kg/t precision)
Sample Weight: 1.0 kg representative waste rock, drill core, or tailings pulp
Turnaround (TAT): Standard: 5-7 Working Days
Mine Effluent & Discharge Physicochemical Water Testing (NEMC Compliance) ENV-WAT-25
Environmental & Water Analysis

Mine Effluent & Discharge Physicochemical Water Testing (NEMC Compliance)

Complete physicochemical and toxicological water quality monitoring ensuring strict compliance with Tanzania National Environment Management Council (NEMC) effluent…

Elements: Free & Total Cyanide (WAD…
Detection Limit: ppb to ppm regulatory discharge limits
Sample Weight: 2x 1.0L water in dedicated chilled HDPE containers
Turnaround (TAT): Standard: 3-5 Working Days | Emergency Compliance: 24-48 Hours
Heavy Metal Soil Contamination & Environmental Baseline Screening ENV-SOL-26
Soil Contamination & Field Screening

Heavy Metal Soil Contamination & Environmental Baseline Screening

Soil and sediment contamination assessment determining baseline heavy metal concentrations, contamination plumes, and agricultural suitability for mining concessions…

Elements: Total Metals: As, Cd, Cr,…
Detection Limit: 0.1 mg/kg – 10,000 mg/kg dry weight
Sample Weight: 1.0 kg dry soil sample in sealed plastic bag
Turnaround (TAT): Standard: 3-5 Working Days
Geochemical Consulting, QA/QC Auditing & Laboratory Advisory CON-ADV-27
Environmental & Water Analysis

Geochemical Consulting, QA/QC Auditing & Laboratory Advisory

Expert scientific consultancy helping exploration companies and mining operators design robust QA/QC programs, resolve assay bias, and establish…

Elements: QA/QC Protocol Design, CRM Selection,…
Detection Limit: N/A (Professional Technical Advisory & Reporting)
Sample Weight: Geochemical datasets, mine QA/QC logs, or on-site facility access
Turnaround (TAT): Custom project-based schedule
Tailings Paste pH, Conductivity & Leachate Toxicity Characterization ENV-TLG-28
Soil Contamination & Field Screening

Tailings Paste pH, Conductivity & Leachate Toxicity Characterization

Detailed characterization of mineral tailings slurry, filter cake, and dry stack residues to predict leachate toxicity, metal mobility,…

Elements: Paste pH, Paste Electrical Conductivity,…
Detection Limit: pH 1.0 – 14.0 | Metals in leachate down to ppb levels
Sample Weight: 2.0 kg representative wet or dry tailings
Turnaround (TAT): Standard: 5-7 Working Days
Microbiological & Potable Camp Water Quality Testing ENV-MIC-29
Environmental & Water Analysis

Microbiological & Potable Camp Water Quality Testing

Health and safety potable water testing for remote mining exploration camps, residential facilities, boreholes, and commercial bottled water…

Elements: E. coli, Total Coliforms, Faecal…
Detection Limit: 0 CFU/100mL detection limit for pathogens
Sample Weight: 500mL sterile water bottle + 1L physicochemical bottle (sampled under aseptic conditions)
Turnaround (TAT): Standard: 2-3 Working Days (microbial incubation cycle: 24-48h)
Agricultural & Industrial Runoff Soil Contamination Profiling ENV-AGR-30
Soil Contamination & Field Screening

Agricultural & Industrial Runoff Soil Contamination Profiling

Comprehensive soil fertility, salinity, and contamination screening for mine rehabilitation programs, agricultural baseline studies, and industrial buffer zone…

Elements: Available Nutrients (N, P, K),…
Detection Limit: ppm and meq/100g soil
Sample Weight: 1.0 kg composite topsoil (0-20cm depth)
Turnaround (TAT): Standard: 3-5 Working Days
🔬

Ultra-Trace ICP-MS / OES

Dual Agilent and PerkinElmer ICP-OES and ICP-MS instrumentation delivering ppt/ppb detection limits across 65 elements.

🔥

High-Capacity Fire Assay

Multi-pot electric fusion furnaces and automated cupellation handling over 1,500 fire assay charges daily.

🛡️

100% Defensible QA/QC

Rigorous 1:20 QC insertion frequency (CRMs, duplicates, blanks) fully compliant with JORC and NI 43-101 standards.