Sartorius Balance MCP Server

Let an AI agent weigh samples, tare containers, log drift and evaporation, and run internal adjustments on Sartorius laboratory balances through the documented SBI (Sartorius Balance Interface) ASCII protocol. Its 10 documented tools cover log, weight.

People who work with log and weight and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

One of 32 MCP servers published from k-dense-ai/lab-instrument-mcps. Stars and repository activity are shared across all of them. See all 32 →

VERIFIED ACTIVE

LAST COMMIT 2026-09-26 · VERIFIED 2026-09-30

Apache-2.0 · Python servers · how we verify → /methodology

01 · Install Sartorius Balance

Claude Code

claude mcp add k-dense-ai-lab-instrument-mcps-servers-c -- uvx labmcp-sartorius

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "k-dense-ai-lab-instrument-mcps-servers-c": {
      "command": "uvx",
      "args": [
        "labmcp-sartorius"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-09-25 - young repo, little track record yet

license Apache-2.0 - declared in the repository

pypi package labmcp-sartorius - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.K-Dense-AI is GitHub-verified and matches the repo owner

03 · What Sartorius Balance can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can read the current net weight from the balance (ESC P). g.

Capability map

Tools grouped from the project's README - what Sartorius Balance lets an agent do.

read & search

3 tools - e.g. Return the most recent raw commands sent to / replies received from the instrument (newest last). Useful for debugging and for recording what was done.; Report which instrument is connected (identity…

get_command_log · get_connection_info · read_weight

Lock

1 tool - e.g. Block or unblock the balance keys, e.g. so nobody tares by accident during a long logging run.

lock_keypad

Log

1 tool - e.g. Record a series of immediate (unfiltered) readings to monitor drift, evaporation, moisture uptake or stabilisation. Returns every reading plus summary statistic

log_weight_series

Reconnect

1 tool - e.g. Close and re-open the connection to the instrument (e.g. after it was power cycled or a cable was re-plugged).

reconnect

run & execute

1 tool - e.g. Adjust (calibrate) the balance with its built-in weight (ESC Z; isoCAL models only). The pan must be empty and the balance undisturbed. SBI sends no completion

run_internal_adjustment

update

1 tool - e.g. Adapt the balance's filter to the ambient conditions (ESC K/L/M/N). Use 'unstable' or 'very_unstable' for draughty or vibrating benches (slower but steadier rea

set_ambient_conditions

Tare

1 tool - e.g. Tare the balance (ESC U, or ESC T on legacy balances): the current load (e.g. an empty container) becomes the tare. Then waits for a stable reading and checks t

tare

Zero

1 tool - e.g. Zero the balance (ESC V). Only works with the pan (nearly) empty, within the balance's zero-setting range; clears the tare. Confirms by reading ~0 afterwards.

zero

Limitations (from the README)

- Stability comes from the unit symbol. SBI has no explicit stability flag: the balance only sends the unit symbol (positions 12–14) when the reading is stable ("If the weighing system has not stabilized, no unit symbol is output", interface description 98647-000-53; the newer manuals list those positions as "unit symbol or space"). read_weight(stable=true) therefore polls ESC P until a reading with a unit arrives. U

04 · Who maintains Sartorius Balance

Sartorius Balance is maintained by k-dense-ai. We track 32 MCP servers from k-dense-ai - 32 actively maintained, 9 combined GitHub stars, oldest repo from Sep 2026. Full record: all servers from k-dense-ai.

05 · Facts

repository: github.com/k-dense-ai/lab-instrument-mcps
website: https://github.com/K-Dense-AI/lab-instrument-mcps/tree/main/servers/chemistry/sartorius-balance
category: other - actively maintained as of 2026-09-30.
registry: io.github.K-Dense-AI/labmcp-sartorius (active, first published 2026-09-26 · 3 versions)
packages: pypi:labmcp-sartorius

06 · Sartorius Balance FAQ

Is Sartorius Balance still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-26. We re-verify nightly.

What can Sartorius Balance do?

With this server connected, an agent can read the current net weight from the balance (ESC P). g.

How do I install Sartorius Balance?

Run `uvx labmcp-sartorius`. You can also paste the ready-made client config above.

Does Sartorius Balance run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Sartorius Balance

Alternatives to Sartorius Balance

Maintained other servers if Sartorius Balance isn't the fit.

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