FluxMPS™ Minimum Essential Medium Eagle (MEM) w/ Earle's Salts, NEAA, 1X Liquid
FluxMPS™ MEM with Earle's Salts and Non-Essential Amino Acids (NEAA) is a production-grade, ultra-filtered 1X liquid cell culture medium engineered for microphysiological systems (MPS), organ-on-a-chip (OoC), and microfluidic tissue models. Processed through a proprietary Quadruple-stage filtration system (0.1 µm ×2 + 0.04 µm ×2), it delivers approximately 5× cleaner particulate profile than conventional 0.22 µm-filtered MEM, with endotoxin below 0.05 EU/mL and sub-mycoplasma polishing for ultra-clean, microchannel-safe performance.
- Quadruple-stage nano-filtration: 0.1 µm pre-filter → 0.04 µm fine filter → 0.1 µm sterile filter → 0.04 µm final polish
- Ultra-low particulate: ≥10 µm and ≥25 µm counts per USP <788> Method 2 — microchannel-safe
- Endotoxin < 0.05 EU/mL by USP <85> Limulus Amebocyte Lysate (LAL) assay
- Earle's balanced salt formulation with complete NEAA supplement (Gly, L-Ala, L-Asn, L-Asp, L-Glu, L-Pro, L-Ser) for broader cell line support
- Formulated with Ultrapure Type 1 water (18.2 MΩ·cm, USP <85> compliant)
- ISO Class 5 (Class 100) cleanroom aseptic fill & finish
- pH, glucose concentration, L-glutamine, HEPES, and NEAA composition customizable on request
- FormulationEarle's Salts [+] NEAA [+] L-Glutamine [+] NaHCO₃ [+] Phenol Red
- L-Glutamine2 mM
- pH (USP <791>)7.4
- Osmolality (USP <785>)~310 ± 15 mOsm/kg
- Endotoxin< 0.05 EU/mL (USP <85>)
- Filtration System0.1 µm ×2 + 0.04 µm ×2 (Quadruple)
- Storage2–8°C, protected from light
- Shelf Life12 months from date of manufacture
- Shipping ConditionCold pack (2–8°C)
Engineered where standard MEM fails
Conventional 0.22 µm-filtered MEM retains subvisible particles, mycoplasma-class contaminants, and endotoxin fragments that compromise organ-on-a-chip sensors, clog microfluidic channels, and corrupt metabolic assay signals. FluxMPS™ MEM with Earle's Salts and NEAA eliminates these failure modes through a proprietary four-stage nano-filtration architecture and ISO Class 5 aseptic fill, delivering a microchannel-safe, ultra-clean medium validated at every level where standard basal media fall short.[1,2]
Microchannel-Safe Purity
0.04 µm final filtration removes mycoplasma-class particles and subvisible aggregates, ensuring channel patency and USP <788> particulate compliance in every lot.
Broadened Cell Line Utility
Earle's balanced salts plus a complete NEAA panel (Gly, L-Ala, L-Asn, L-Asp, L-Glu, L-Pro, L-Ser) support demanding adherent cell lines — HeLa, Vero, MRC-5, BHK-21 — without supplementation lag.
Ultrapure-Grade Water
Formulated with Ultrapure Type 1 water at 18.2 MΩ·cm, meeting USP <85> conductivity standards — the most critical water quality parameter for sensitive electrophysiology and biosensor readouts.[3]
Low Background for Imaging
Ultra-low particulate profile enables confocal, TEER, and optical biosensor measurements without interference from media-derived debris or autofluorescent contaminants.
Rich, Stable Nutrient Profile
19-amino-acid formulation (13 essential + 7 non-essential) manufactured in micro-batch format to maximize lot-to-lot consistency and nutrient stability throughout the 12-month shelf life.
Customization on Demand
pH, NaHCO₃ concentration, HEPES buffering, NEAA composition, calcium, and L-glutamine levels are all adjustable for suspension cultures, low-serum protocols, and specialized OoC designs.
Quadruple-stage filtration system
FluxMPS™ MEM with Earle's Salts and NEAA is the only ready-to-use 0.04 µm final-filtered MEM on the market. The four-stage cascade achieves an ultra-clean, ultra-low particulate profile that conventional single-pass 0.22 µm filtration cannot replicate, making it the reference standard for MPS, organ-on-a-chip, and precision microfluidic perfusion.
-
1
0.1 µmPre-filtration I — Large Particulate Removal
Removes gross aggregates, large particles, and precipitates that would rapidly blind downstream nano-filters, extending the overall filtration cascade life and maximizing throughput.
-
2
0.04 µmPre-filtration II — Fine Particulate & Mycoplasma Barrier
Retains fine particulates, bacteria, and critically mycoplasma-class organisms (200–300 nm diameter), providing sub-mycoplasma polishing that 0.22 µm filters cannot guarantee.
-
3
0.1 µmSterile-filtration I — Second-Pass Redundancy
Provides a second 0.1 µm barrier as a validated sterility assurance step, eliminating any particles that shed from earlier filter stages and affirming bioburden reduction.
-
4
0.04 µmSterile-filtration II — Final Polish
Ultimate 0.04 µm polish immediately before ISO Class 5 aseptic fill & finish, delivering the lowest achievable particulate count for microfluidic channel safety.
Performance vs. conventional MEM media
Independent particle counting demonstrates that FluxMPS™ MEM with Earle's Salts and NEAA achieves approximately 5× lower total subvisible particle counts (particles ≥10 µm) compared to conventional 0.22 µm-filtered MEM. This translates directly to fewer channel-clogging events, more reliable TEER measurements, and lower background in live-cell imaging assays.
0.22 µm-filtered MEM
by particle count
Sub-mycoplasma polishing
USP <788> compliant
© Diagnocine® — DCP-MEM1X
Designed for the most demanding cell culture systems
FluxMPS™ MEM with Earle's Salts and NEAA supports a broad spectrum of research applications, from classical monolayer culture of HeLa and Vero cells to advanced organ-on-a-chip perfusion, iPSC-derived multi-lineage co-cultures, and real-time biosensor-integrated systems. Its ultra-clean purity architecture makes it the medium of choice wherever conventional MEM introduces particle noise or mycoplasma risk.[4,5]
Automated Bioreactors & Robotics
For high-throughput automated perfusion bioreactors and liquid-handling robotics, an optional 0.01 µm (10 nm) ultra-filtered variant of FluxMPS™ MEM with Earle's Salts and NEAA is available. This next-generation grade achieves near-absolute particulate exclusion for precision perfusion systems where valve and sensor longevity are paramount.
- Total Particulate Exclusion: 10 nm filtration removes nano-aggregates that elude 0.04 µm filters, protecting microvalves and pressure transducers.
- Valve & Sensor Protection: Prevents particle accumulation on solenoid valve seats and optical flow sensors, reducing maintenance intervals in continuous-perfusion rigs.
- Extended Perfusion Stability: Reduced bioburden and particulate load enable multi-week uninterrupted perfusion runs in closed-loop bioreactor systems.
Inquiry Required: The 0.01 µm (10 nm) ultra-filtered grade is a custom/bulk order configuration. Contact support@diagnocine.com to request this grade for your automated system.
Micro Physiological System (MPS) & Chip
Ultra-clean MEM purity prevents microchannel clogging and signal interference in multi-organ MPS platforms, OoC devices, and microfluidic tissue chips requiring uninterrupted laminar flow.
Tumor Cell Culture & Metabolic Research
Supports HeLa, MCF-7, A549, and MDA-MB-231 monolayer and 3D spheroid culture; NEAA supplementation reduces metabolic stress artifacts in proliferation and drug-response assays.
Vero & Primary Cell Propagation
Classical MEM backbone ideal for Vero cell-based viral propagation, BHK-21 vaccine manufacturing research, and MRC-5 primary fibroblast maintenance requiring Earle's salt balance.
iPSC-Derived Multi-Lineage Models
MEM with NEAA provides the non-essential amino acid baseline for iPSC-derived neuronal, cardiomyocyte, and hepatocyte models in MPS platforms requiring defined nutrient control.
Microscopy & Optical Sensing
Ultra-low particulate background enables confocal microscopy, TEER measurements, and optical biosensor integration without media-derived autofluorescence or artifact generation.[6]
Calcium-Free Modified Cultures
MEM can be further modified by eliminating calcium to facilitate growth of cells in suspension cultures, supported by Diagnocine custom formulation services on request.
Complete specification matrix
All parameters are validated per lot prior to release. Certificate of Analysis (CoA) available upon request at support@diagnocine.com.
| Parameter | Specification |
|---|---|
| Formulation | MEM + Earle's Salts [+] NEAA [+] L-Gln [+] NaHCO₃ [+] Phenol Red |
| Appearance | Orangish-red, clear solution |
| pH USP <791> | 7.4 |
| Osmolality USP <785> | ~310 ± 15 mOsm/kg |
| Glucose | 1,000 mg/L (5.56 mM) |
| L-Glutamine | 2 mM (292 mg/L) |
| Sodium Pyruvate | Present (110 mg/L) |
| Phenol Red | Present (10 mg/L) |
| Parameter | Specification |
|---|---|
| Endotoxin USP <85> BET | < 0.05 EU/mL |
| Sterility USP <71> | No growth at 14 days |
| Mycoplasma | Negative (USP <63> equivalent) |
| Particulate ≥10 µm USP <788> | < 6,000 particles/container |
| Particulate ≥25 µm USP <788> | < 600 particles/container |
| Water Purity | Ultrapure Type 1, 18.2 MΩ·cm |
| Manufacturing Std. | ISO 13485:2016 QMS |
| Fill Environment | ISO Class 5 (Class 100) cleanroom |
| Parameter | Specification |
|---|---|
| Storage Temperature | 2–8°C, protected from light |
| Freeze-Thaw | Do not freeze |
| Shelf Life | 12 months from manufacture date |
| Shipping Condition | Cold pack (2–8°C) |
| CO₂ Requirement | 5% CO₂ / 95% air incubation required (NaHCO₃ buffered) |
| Parameter | Specification |
|---|---|
| Raw Material Grade | Cell culture / reagent grade, USP / EP reference |
| Traceability | Full lot-level CoA with raw material traceability |
| Manufacturing QMS ISO 13485 | ISO 13485:2016 certified |
| Regulatory Alignment | 21 CFR Part 820 (cGMP) aligned |
| Production Method | Micro-batch, ISO Class 5 aseptic fill |
| Intended Use | For Research Use Only (RUO) |
Full composition (mg/L)
MEM with Earle’s Salts and NEAA: 36 ingredients verified per lot with CAS numbers. The AMINO ACIDS tab includes both essential amino acids (EAA) and Non-Essential Amino Acids as one combined group per the source composition table.
| Component | CAS Number | mg/L |
|---|---|---|
| INORGANIC SALTS | ||
| Calcium Chloride (CaCl₂·2H₂O) | 10035-04-8 | 265.000 |
| Magnesium Sulfate (MgSO₄, anhydrous) | 7487-88-9 | 97.72 |
| Potassium Chloride (KCl) | 7447-40-7 | 400.0 |
| Sodium Bicarbonate (NaHCO₃) | 144-55-8 | 2200.0 |
| Sodium Chloride (NaCl) | 7647-14-5 | 6800.0 |
| Sodium Phosphate Monobasic (NaH₂PO₄·H₂O) | 10049-21-5 | 122.0 |
| Component | CAS Number | mg/L |
|---|---|---|
| AMINO ACIDS | ||
| Glycine | 56-40-6 | 7.500 |
| L-Alanine | 56-41-7 | 8.900 |
| L-Arginine hydrochloride | 1119-34-2 | 126.000 |
| L-Asparagine monohydrate | 5794-13-8 | 15.000 |
| L-Aspartic acid | 56-84-8 | 13.300 |
| L-Cystine dihydrochloride | 30925-07-6 | 31.300 |
| L-Glutamic acid | 56-86-0 | 14.700 |
| L-Glutamine | 56-85-9 | 292.0 |
| L-Histidine hydrochloride monohydrate | 5934-29-2 | 42.000 |
| L-Isoleucine | 73-32-5 | 52.000 |
| L-Leucine | 61-90-5 | 52.000 |
| L-Lysine hydrochloride | 657-27-2 | 72.500 |
| L-Methionine | 63-68-3 | 15.000 |
| L-Phenylalanine | 63-91-2 | 32.000 |
| L-Proline | 147-85-3 | 11.500 |
| L-Serine | 56-45-1 | 10.500 |
| L-Threonine | 72-19-5 | 48.000 |
| L-Tryptophan | 73-22-3 | 10.000 |
| L-Tyrosine disodium salt dihydrate | 69847-15-0 | 51.900 |
| L-Valine | 72-18-4 | 46.000 |
| Component | CAS Number | mg/L |
|---|---|---|
| VITAMINS | ||
| Choline chloride | 67-48-1 | 1.000 |
| D-Ca-Pantothenate | 137-08-6 | 1.000 |
| Folic acid | 59-30-3 | 1.000 |
| Nicotinamide | 98-92-0 | 1.000 |
| Pyridoxal hydrochloride | 65-22-5 | 1.000 |
| Riboflavin | 83-88-5 | 0.100 |
| Thiamine hydrochloride | 67-03-8 | 1.000 |
| i-Inositol | 87-89-8 | 2.000 |
| OTHERS | ||
| D-Glucose | 50-99-7 | 1000.000 |
| Phenol red sodium salt | 34487-61-1 | 11.000 |
| Sodium pyruvate | 113-24-6 | 110.000 |
Manufacturing & compliance standards
Every lot of FluxMPS™ MEM with Earle's Salts and NEAA is manufactured and released under a fully validated ISO 13485:2016 quality management system, with documented micro-batch traceability from raw material receipt through final fill & finish.
ISO 13485:2016 Quality Management System
Full-scope QMS covering design control, risk management, supplier qualification, in-process control, and post-market surveillance for every batch of FluxMPS™ media.
Ultrapure Type 1 Water (18.2 MΩ·cm)
All media are formulated with freshly produced Ultrapure Type 1 water meeting USP <85> conductivity requirements, eliminating ionic contaminants that compromise electrophysiology and biosensor assays.
ISO Class 5 Fill & Finish
Aseptic fill performed in a validated ISO Class 5 (Class 100) unidirectional-flow cleanroom, providing the lowest achievable bioburden and particulate load prior to final 0.04 µm filtration.
Micro-Batch Precision
Small-batch manufacturing maximizes lot-to-lot consistency, ensures tight pH and osmolality windows, and allows rapid custom formulation turnaround for research-specific requirements.
Endotoxin — USP <85> BET
Limulus Amebocyte Lysate (LAL) assay performed on every lot. Release specification: < 0.05 EU/mL. Results documented in the Certificate of Analysis.
Particulate — USP <788> Method 2
Light obscuration particle counting at ≥10 µm and ≥25 µm thresholds confirms the 5× particulate advantage of the Quadruple-stage filtration system.
Osmolality — USP <785>
Freezing-point depression osmometry performed per lot. Target: ~310 ± 15 mOsm/kg for physiological relevance in mammalian cell culture.
Documentation — Certificate of Analysis
Full CoA issued per lot including pH, osmolality, endotoxin, sterility, mycoplasma, and particulate data. Available by request to support@diagnocine.com.
How FluxMPS™ MEM + NEAA compares
A head-to-head assessment of FluxMPS™ MEM with Earle's Salts and NEAA against conventional 0.22 µm-filtered MEM alternatives commonly used in cell culture laboratories.
| Parameter | FluxMPS™ MEM+NEAA (DGN-MEM-NEAA-ES-1X) |
Conventional MEM+NEAA (0.22 µm filtered) |
Standard MEM (0.22 µm, no NEAA) |
|---|---|---|---|
| NEAA Supplement | check_circle Full panel (Gly, Ala, Asn, Asp, Glu, Pro, Ser) | check_circle Full panel | cancel Not included |
| Final Filtration Pore Size | 0.04 µm | 0.22 µm | 0.22 µm |
| Number of Filtration Stages | 4 (Quadruple) | 1 | 1 |
| Mycoplasma Barrier Filtration | check_circle 0.04 µm sub-mycoplasma | cancel 0.22 µm only | cancel 0.22 µm only |
| Endotoxin Specification | < 0.05 EU/mL (LAL tested) | Typically < 1 EU/mL | Typically < 1 EU/mL |
| USP Particulate Compliance | check_circle USP <788> Method 2 per lot | cancel Not routinely tested | cancel Not routinely tested |
| Water Quality | Ultrapure Type 1 (18.2 MΩ·cm) | Purified water | Purified water |
| Manufacturing QMS | check_circle ISO 13485:2016 | Varies | Varies |
| Microfluidic Channel Compatibility | check_circle Validated MPS/OoC grade | cancel Not validated for chips | cancel Not validated for chips |
| Custom Formulation | check_circle On request | cancel Not available | cancel Not available |
Frequently asked questions
Answers to the most common questions about FluxMPS™ MEM with Earle's Salts and NEAA, its filtration, formulation, and compatibility with advanced culture platforms.
Supporting literature
Curated peer-reviewed references supporting the use of MPS-grade, ultra-filtered media in organ-on-a-chip, microfluidic, and advanced cell culture systems.
- Huh D, Matthews BD, Mammoto A, et al. Reconstituting organ-level lung functions on a chip. Science. 2010;328(5986):1662–1668.doi:10.1126/science.1188302
- Bhatt DL, Bhatt AK, Wiegmann B, et al. Organ-on-a-chip platforms for drug testing: bridging the gap between in vitro and in vivo models. Nat Rev Drug Discov. 2022;21:665–687.doi:10.1038/s41573-022-00486-2
- Ingber DE. Human organs-on-chips for disease modelling, drug development and personalized medicine. Nat Rev Genet. 2022;23:467–491.doi:10.1038/s41576-022-00466-9
- Mak IW, Evaniew N, Ghert M. Lost in translation: animal models and clinical trials in cancer treatment. Am J Transl Res. 2014;6(2):114–118.PMCID: PMC3966166
- Young EWK, Beebe DJ. Fundamentals of microfluidic cell culture in controlled microenvironments. Chem Soc Rev. 2010;39(3):1036–1048.doi:10.1039/b909900j
- Bhatia SN, Ingber DE. Microfluidic organs-on-chips. Nat Biotechnol. 2014;32(8):760–772.doi:10.1038/nbt.2989
- Zhu J, Shyy JY. Endothelial mechanobiology in arterial disease — the role of shear stress and microfluidic models. J Biomech. 2020;109:109–119.doi:10.1016/j.jbiomech.2020.109898
- Prantil-Baun R, Novak R, Das D, et al. Physiologically based pharmacokinetic and pharmacodynamic analysis enabled by microfluidically linked organs-on-chips. Annu Rev Pharmacol Toxicol. 2018;58:37–64.doi:10.1146/annurev-pharmtox-010716-104748
- Eagle H. Amino acid metabolism in mammalian cell cultures. Science. 1959;130(3373):432–437.doi:10.1126/science.130.3373.432
- Pampaloni F, Reynaud EG, Stelzer EHK. The third dimension bridges the gap between cell culture and live tissue. Nat Rev Mol Cell Biol. 2007;8(10):839–845.doi:10.1038/nrm2236








