Lab chemicals, Milli-Q water & filtration in Nepal

Analytical Reagents

EMSURE · EMPARTA · EMPLURA

• EMSURE ACS, ISO, Reag. Ph Eur grades
• EMPARTA ACS for routine analysis
• EMPLURA for synthesis and general use
• Acids also in Safebreak PE-coated bottles

Salts, acids, bases, metals and oxides

Solvents

LiChrosolv · SupraSolv · Uvasol

• LiChrosolv for HPLC, UPLC and LC-MS
• SupraSolv for GC, headspace and GC-MS
• Uvasol for UV/IR spectroscopy
• SeccoSolv dried and MagniSolv NMR solvents

Lab to bulk packs, with withdrawal systems

Volumetric Solutions & Standards

Titripur · Titrisol · Certipur

• Titripur ready-to-use volumetric solutions
• Certipur pH buffers and volumetric standards (ISO 17034)
• Certipur ICP and AAS standards

NIST-traceable, for titration and calibration

Titration & Karl Fischer

Apura · 3S smart reagents

• Apura volumetric and coulometric KF reagents
• Water standards for KF titration
• RFID 3S reagents for connected titrators

For water content and assay titrations

Test Kits & Photometers

Spectroquant · MQuant

• Spectroquant Prove spectrophotometers
• Spectroquant Move handheld colorimeters
• Test kits for COD, ammonium, nitrate, phosphate

Plus MQuant and MColorpHast test strips

Trace Analysis

Suprapur · Ultrapur

• Suprapur acids, bases and salts (ppb level)
• Ultrapur acids and H2O2 (ppt level)
• Spectromelt fluxes for XRF

For AAS, ICP-OES and ICP-MS

Milli-Q SQ 2Series

Modular pure & ultrapure water

• 18.2 MΩ·cm Type 1 water at any bench
• RO up to 42 L/h; 3.5 L carry tank fills in ~6 min
• Paper-sized footprint, 30-min self-install

Meets USP, EP, ASTM Type I and ISO 3696 Grade 1

Milli-Q IQ 7003/05/10/15

Integrated ultrapure & pure water

• Type 1 and Type 2 water from one system
• Mercury-free UV oxidation
• Touchscreen and full data traceability

For HPLC, LC-MS, ICP-MS and molecular biology

Milli-Q IX 7003/05/10/15

Connected pure water

• Type 2 pure water, Elix EDI technology
• Online monitoring via MyMilli-Q digital services
• Integrated storage reservoir

For buffers, media and feeding Type 1 systems

Milli-Q EQ 7000

Ultrapure point-of-use

• Type 1 water from purified feed water
• Compact footprint, flexible dispensing
• Pairs with an existing pure water supply

For labs with a central pure water loop

Milli-Q HX 7000 Series

High-throughput pure water

• Up to 9,000 L/day of constant-quality pure water
• Water-saving Elix EDI and E.R.A. technologies
• 24/7 monitoring, Milli-Q Connect remote service

For large labs, washers and autoclaves

Point-of-Use Paks

Final filters for specific applications

• Millipak: bacteria- and particle-free water
• Biopak: pyrogen- and nuclease-free water
• LC-Pak, EDS-Pak and VOC-Pak for trace organics, endocrine disruptors and VOCs

For application-specific water quality

Milli-Q HR 7000 Series

Central pure water

• Pure water up to 13,000 L/day
• E.R.A. cuts water use by up to 50%
• Plug & play with SDS 500 storage and distribution
• 24/7 monitoring, Milli-Q Connect

For whole buildings and core facilities

Milli-Q CLX 7000 Series

Water for clinical analysers

• Economical, reliable high-performance systems
• Elix electrodeionisation technology
• For analysers needing up to 3,000 L/day
• Milli-Q Connect remote service

For hospital and diagnostic labs

Milli-Q IQ Element

Ultrapure for trace elements

• Ultra-trace element water at ppt levels
• Intuitive touchscreen control and monitoring
• Easy integration into lab space

For ICP-MS and trace metal analysis

Milli-Q water quality

CONTAMINANT PARAMETER TYPE I TYPE II Ions Resistivity (MΩ·cm) 18.2 > 5 Organics TOC (ppb) < 5 < 30 Microbes Bacteria (cfu/mL) < 0.1* < 0.1* Particulates Particles > 0.22 µm < 1 — Nuclease DNase / RNase (pg/mL) < 5 / < 1** — Pyrogen Endotoxin (EU/mL) < 0.001** — * with Millipak filter · ** with Biopak filter

MAS-100 Air Samplers

Active air monitoring

• MAS-100 NT: industry standard for viable air
• MAS-100 Eco and VF: economical and portable
• MAS-100 ISO NT and ISO MH for isolators

For clean rooms, isolators and compressed gases

ICR / ICR Plus Plates

Settle and contact plates

• Produced in clean rooms, gamma-irradiated
• H2O2-impermeable triple-sleeve packaging
• Data-matrix barcode on every plate
• Neutralisers for disinfectants and β-lactams

For ISO 5 clean rooms and isolators

ICR Swab

Ready-to-use surface swab

• Swab and broth reservoir in one tube
• Qualitative presence/absence test
• Reaches surfaces contact plates cannot

For isolator and clean-room surfaces

Steritest Symbio Pumps

Sterility testing

• Low pump height for laminar flow hoods
• Automatic head closure and precise timer
• 11 cm colour display, test-method library

For pharmacopoeial sterility tests

PyroMAT NEW

Monocyte Activation Test

• In-vitro pyrogen test, no animals
• Detects a broad range of pyrogens
• ELISA read-out, supported by regulations

For parenterals and medical devices

Media Fill & Sterile IPM

Aseptic process validation

• Irradiated TSB: 500 g, 5 kg or 10 L ready-to-use bags
• Non-animal vegetable peptone option
• Sterile irradiated isopropyl myristate

For media fill and ointment sterility tests

Research Chemicals

Synthesis and research

• Organic and inorganic reagents
• Ligands, catalysts and building blocks
• Redi-Dri free-flowing salts and buffers
• Sure/Seal moisture-sensitive packs

For synthesis, research and R&D labs

Biochemicals

BioReagent · BioXtra grades

• Enzymes and proteins
• Amino acids, sugars and nucleotides
• Buffers and detergents
• Avanti Polar Lipids

For biochemistry and life-science research

Cell Culture

Media and labware

• Classical and specialty media
• Sera, antibiotics and supplements
• Corning flasks, plates and Stripettes
• Stericup sterile filtration

For cell and tissue culture labs

Antibodies & Molecular Biology

ZooMAb · Roche

• ZooMAb and research antibodies
• Roche enzymes, PCR mixes and inhibitor tablets
• GenElute nucleic-acid kits
• Custom oligos, CRISPR and siRNA

For research and diagnostics labs

Standards & Reference Materials

Supelco · Cerilliant

• Analytical standards and TraceCERT CRMs
• Cerilliant drug and toxicology CRMs
• Pharmacopoeia and residual-solvent standards
• USP <232> elemental impurity mixes

For QC and method validation

Pathology, Stains & Dyes

Histology to IHC

• Routine histology and microscopy stains
• Fixatives, mounting and embedding media
• Cell Marque IVD antibodies
• pH indicators and fluorescent dyes

For pathology, microscopy and teaching

Qualitative Papers

• Grades 1–6 and 602h, 2.5 to 25 µm
• Grade 1: the everyday lab filter paper
• Circles, sheets and rolls

Clarifying liquids, soil and food testing

Wet-Strengthened & Folded

• Grades 91, 93, 113, 114, 1573
• Resin-strengthened for high wet strength
• Fluted, pyramid and quadrant-fold, ready to use

Fast routine filtration, no folding

Quantitative Ashless

• Grades 40, 41, 42, 43, 44 and 589
• 0.007% ash nominal
• For gravimetric work and instrument sample prep

Gravimetric analysis, AAS/ICP prep

Hardened Grades

• Low ash 50, 52, 54 (0.015% ash)
• Ashless 540, 541, 542 (≈0.006% ash)
• Acid-hardened: strong acid and alkali resistant

Büchner filtration, cement silica tests

Glass Microfibre

• GF/A, GF/B, GF/C, GF/D, GF/F, 934-AH
• Borosilicate, usable up to 550 °C
• RTU pre-weighed filters for TSS/TDS (SM 2540)

Water, wastewater and air particulates

Quartz & Air Monitoring

• QM-A, QM-B, QM-H quartz filters, to 800–900 °C
• Pallflex TissuQuartz and Emfab filters
• PM2.5 PTFE membranes with support ring

Stack, PM2.5/PM10 and trace-metal sampling

Choosing a grade

µm = particle retention in liquid · *Herzberg speed, seconds per 100 mL (higher = slower) GRADE TYPE µm SPEED* ASH % 1 Qualitative 11 150 0.06 2 Qualitative 8 240 0.06 4 Qualitative 20–25 37 0.06 5 Qualitative 2.5 1420 0.06 40 Ashless 8 340 0.007 41 Ashless 20–25 54 0.007 42 Ashless 2.5 1870 0.007 GRADE TYPE µm SPEED* ASH % 50 Hardened low ash 2.7 2685 0.015 540 Hardened ashless 8 200 0.006 541 Hardened ashless 20–25 34 0.006 542 Hardened ashless 2.7 2510 0.006 GF/A Glass microfibre 1.6 62 — GF/C Glass microfibre 1.2 100 — GF/F Glass microfibre 0.7 325 — Also: seed germination papers, grades for soil, sugar and textile testing, and activated-carbon filters for air monitoring.

Membrane Filters

• MCE plain and gridded, cellulose nitrate
• Regenerated cellulose and cellulose acetate
• PTFE, to 120 °C, for solvents and venting

Microbiology, HPLC and particle analysis

Track-Etched & Anodisc

• Nuclepore and Cyclopore polycarbonate
• Black membranes for epifluorescence
• Anodisc alumina: 0.02, 0.1, 0.2 µm

Microscopy, SEM and precise cut-offs

Puradisc & Uniflo

• Syringe filters for up to 100 mL
• 4–30 mm; nylon, PES, PTFE, PVDF, CN
• Sterile and non-sterile options

Routine HPLC and aqueous sample prep

GD/X, SPARTAN & Anotop

• GD/X: GMF prefilter, 3–7× more sample
• SPARTAN: RC, HPLC-certified at 210/254 nm
• Anotop and Anotop IC (alumina)

Difficult, HPLC and IC samples

Pall Acrodisc

• Supor PES: high flow, low protein binding
• 13–37 mm, gamma-sterile options
• PF and Serum versions with prefilter

Sterile filtration and cell culture

Filter Vials

• Mini-UniPrep: filter straight into an autosampler vial
• UniPrep and Autovial (5 and 12 mL)
• No syringe needed

High-throughput HPLC prep

Centrifugal Devices

• Nanosep, Microsep, Macrosep, Jumbosep, Vivaspin
• From < 50 µL to 60 mL; 1 kD to 0.45 µm
• Over 90% recovery

Concentration, desalting, buffer exchange

Inline, Capsule & Bottle-Top

• Polydisc, Polycap and PolyVENT capsules
• Inline filter/degassers for HPLC lines
• VacuCap bottle-top filters, 100 mL–5 L

Mobile phase, media and larger volumes

AcroPrep Filter Plates

• 24-, 96- and 384-well formats
• Lysate clearance, DNA/protein clean-up
• Ultrafiltration and solvent filtration

High-throughput sample prep

Glass Vacuum Filtration

• Borosilicate glass assemblies and funnels
• Graduated funnels, precision-ground seals
• 3-piece funnels for glass microfibre

Autoclavable; HPLC solvent filtration

Stainless Steel Hardware

• MV 050 vacuum units, usable to 200 °C
• AS 300 and 600 three/six-place manifolds
• Inline and syringe filter holders

Durable, reusable and autoclavable

Sentino Microbiology Pump

• Small footprint, disposable fluid path
• Magnetic funnels for one-handed use
• Aseptic one-touch membrane dispenser

Membrane filtration microbiology

Funnels & Manifolds

• MicroFunnel ready-to-use disposable funnels
• MBS I system: 100 and 350 mL funnels
• Laboratory manifolds and forceps

Water, beverage and bioburden testing

Extraction Thimbles

• High-purity cellulose thimbles
• Single and double thickness
• Glass and quartz microfibre options

Soxhlet fat and pesticide extraction

Lab Papers

• Chromatography and blotting papers
• Benchkote bench protector
• Weighing boats, phase separator, lens tissue

Everyday lab essentials

pH & Test Papers

• pH 0–14 and narrow-range strips and rolls
• Colour-bonded dyes that do not leach
• Litmus, Congo red, lead acetate papers

Quick checks in lab and field

903 Sample Collection Cards

• Collect blood and body fluids as dried spots
• No refrigeration needed
• 5-spot and snap-apart formats

Blood and biological fluid storage

Lab-Scale TFF & Capsules

• Minimate EVO TFF, samples up to 1 L
• AcroPak sterile capsules, Supor EKV
• Acro vent devices for bioreactors

Concentration, diafiltration, sterile media